Document:

GUARANTY

This guaranty (the
“Guaranty”) is entered into as of February 28, 2007 by PLANT HEALTH CARE plc, a public limited company duly organized and existing under the
laws of England and Wales (“Guarantor”) for the benefit of EDEN BIOSCIENCE CORPORATION, a Washington corporation
(“Payee”).

RECITALS

A. Pursuant to the terms of an Asset
Purchase Agreement (the “Agreement”) dated as of December 1, 2006 between Payee and Plant Health Care, Inc., a Pennsylvania corporation and a
subsidiary of Guarantor (“Maker”), under which Maker agreed to purchase certain assets and assume certain obligations of Payee, Maker has
delivered to Payee concurrently herewith a Secured Promissory Note in the original principal amount of $700,751 (the “Note”), along with a
Security Agreement and Patent and Trademark Security Agreement (the “Security Agreement”). The Agreement, the Note, this Guaranty, and the
Security Agreement, along with any amendments or modifications thereto, or instruments delivered in connection therewith, are collectively referred to
herein as the “Documents.” Capitalized terms used in this Guaranty that are not defined herein shall have the meanings assigned to those
terms in the Agreement.

B. Guarantor is the indirect parent of
Maker and, as such, will derive direct and indirect economic benefits from the Agreement, including without limitation the provisions of the
Note.

C. One of the conditions precedent to
the obligations of Payee to consummate the transactions contemplated by the Agreement is receipt by Payee of this Guaranty from Guarantor. Guarantor is
executing this Guaranty in order to satisfy that condition. Payee would not have accepted the Note but for the execution and delivery of this
Guaranty.

NOW, THEREFORE, for valuable
consideration, and in order to induce Payee to enter into the Agreement, Guarantor agrees as follows:

SECTION I
 UNCONDITIONAL GUARANTY

Guarantor unconditionally, absolutely,
and irrevocably guarantees payment and performance of all present and future debts, liabilities, and obligations of Maker to Payee under the Note,
including, but not limited to, the due and punctual payment of the principal and interest owed pursuant to the Note, whether according to the present
terms of the Note, or at any earlier or accelerated date or dates as provided therein, or pursuant to any amendment, modification, or replacement of
the Note (collectively, the “Obligations”). The liability of Guarantor under this Guaranty includes accrued interest on any sum due under
this Guaranty (calculated at the highest rate of interest in effect under the Note at the time in question) and expenses due pursuant to Section 10.6
of this Guaranty; provided, however, that the Obligations shall be subject to the rights of setoff provided to Maker under the Note.

SECTION II
 WAIVERS BY GUARANTOR AND RIGHTS OF PAYEE

Guarantor intends that it shall remain
unconditionally liable for payment of the Obligations regardless of any act or omission that otherwise might operate as a legal or equitable defense to
discharge Maker, Guarantor, or any other guarantor of the Obligations in whole or in part. Therefore, Guarantor hereby waives any defense it has or may
have to the enforceability of its obligations under this Guaranty (except those matters, if any, that may not be waived under the Uniform Commercial
Code of the State of Delaware (the “UCC”) or other applicable law) by virtue of any of the following and, subject to the terms of the
Documents and applicable law, Payee may do any of the following things as many times as Payee wishes,

without Guarantor’s permission
and without notifying Guarantor, and this will not affect Guarantor’s promise to pay the entire amount of the Obligations:

(a) Payee does not have to notify
Guarantor of Payee’s acceptance of this Guaranty;

(b) Payee does not have to notify
Guarantor of (i) Maker’s failure to pay all or any portion of the Obligations when due, or (ii) Maker’s failure to perform any other
obligation under the Note;

(c) Payee may extend, renew,
accelerate, or otherwise change the time for payment of any of Maker’s obligations to Payee;

(d) Payee may make any other changes to
the Note pursuant to the terms of the Note;

(e) Payee may release Maker, any other
guarantor of the Obligations, or anyone else against whom Payee may have the right to collect amounts that may become due under the
Note;

(f) Payee may use the Collateral to
satisfy the Obligations (in whole or in part, as applicable) and direct the order or manner of sale thereof pursuant to the terms and conditions of the
Security Agreement in Payee’s good faith discretion;

(g) Payee may apply any money or
Collateral received from or on behalf of Maker to the repayment of any indebtedness due to Payee from Maker in any order that Payee
elect;

(h) Payee may release, surrender,
substitute, add, or exchange any Collateral that Payee now holds or may later acquire as security for the Obligations, or Guarantor’s obligations
hereunder;

(i) Payee may forbear from or forego
pursuing Maker, or from foreclosing or otherwise realizing upon any security interest, letter of credit, or other guaranty;

(j) Payee may impair any Collateral, or
Guarantor’s obligations hereunder, by Payee’s acts or omissions, including, but not limited to, Payee’s failure to perfect a security
interest in any Collateral;

(k) Guarantor hereby waives any defense
arising out of the absence, impairment, or loss of (i) any or all rights of recourse, reimbursement, contribution, or subrogation, or (ii) any other
right or remedy of Guarantor against Maker, any other party, or any Collateral;

(l) Guarantor hereby waives any defense
(i) arising by reason of any invalidity, ineffectiveness, or unenforceability of all or any portion of any of the Documents, or (ii) otherwise
available to or asserted by Maker (other than full payment in cash);

(m) Guarantor waives diligence, demand
for performance, notice of nonperformance, presentment, protest, notice of dishonor, and indulgences and notices of every other kind;
and

(n) Guarantor agrees that Payee in its
sole and absolute discretion may proceed against all or any portion of the Collateral by way of either judicial or nonjudicial foreclosure in
accordance with the terms of the Security Agreement and applicable law.

If Guarantor pays the Obligations in
accordance with the terms of this Guaranty, Payee shall assign Payee’s rights with respect to the Obligations under the Note and the Security
Agreement to Guarantor (without recourse, warranty, or representation) provided, however, that such assignment shall be subject to the terms of this
Guaranty, including the waivers set forth in this Section II of this Guaranty.

SECTION III
 PAYEE’S RIGHT NOT TO PROCEED AGAINST MAKER,
 OTHER GUARANTORS, OR COLLATERAL

If an Event of Default occurs under the
Security Agreement and is continuing, Payee may enforce this Guaranty against Guarantor (a) without attempting to collect or without exhausting efforts
to collect from Maker, any other guarantor, or anyone else who is or may be liable for the Obligations, or (b) without

attempting to enforce the rights of
Payee in any Collateral. Without limiting the foregoing, Payee may sue on the Note, may elect not to sue on the Note, may elect not to enforce the
security interest in some or all of the Collateral, may sue less than all of the guarantors of the Obligations, or may take any other action authorized
under the Documents or by law. In each case, Payee shall have the right to exercise all available remedies in whatever order Payee elects in accordance
with the terms of the Agreement and applicable law and may join Guarantor in any suit on the Documents, or may proceed against Guarantor in a separate
proceeding. In case of suit, sale, or foreclosure, only the net proceeds therefrom, after deducting all charges and expenses of any kind and nature
whatsoever, shall be applied to the reduction of the amount due on the Note (or other Documents, as applicable), and Payee shall not be required to
institute or prosecute proceedings to recover any deficiency as a condition of payment under or enforcement of this Guaranty. At any sale of all or any
portion of the Collateral, Payee may in its discretion purchase all or any part of the Collateral and may apply against the amount bid therefor all or
any portion of the balance of the Obligations. Guarantor hereby waives to the fullest extent permitted by applicable law at the time in question
(including the UCC) the right to object to the amount that may be bid by Payee at such foreclosure sale.

SECTION IV
 BANKRUPTCY AND ASSIGNMENT OF RIGHTS

Guarantor agrees that its obligation to
pay the Obligations under the terms of this Guaranty shall not be impaired, modified, changed, released, or limited in any manner by any impairment,
modification, change, release, defense, or limitation of the liability of Maker, or by the appointment of or existence of a receiver, trustee,
debtor-in-possession, or estate under any bankruptcy or receivership case or proceeding with respect to Maker. That means, among other things, that if
acceleration of the time for payment of any amount payable by Maker under any Document is stayed upon the insolvency, bankruptcy, or reorganization of
Maker, all amounts owed by Maker to Payee that otherwise are subject to acceleration under the terms of the Documents nonetheless immediately shall be
due and payable by Guarantor upon demand by Payee under this Guaranty for payment of such amounts (together with interest thereon in accordance with
the last sentence of Section I of this Guaranty, regardless of whether Payee is entitled to recover such interest from Maker in any bankruptcy case
filed by or with respect to Maker). Furthermore, if any payment made by Maker is reclaimed in a bankruptcy or receivership case or proceeding,
Guarantor shall pay to Payee the amount reclaimed. Guarantor further assigns to Payee all rights Guarantor has or may have against Maker in any case or
proceeding under the United States Bankruptcy Code, or any receivership or insolvency case or proceeding, until the Obligations have been paid in full.
This assignment includes all rights of Guarantor to be paid by Maker even if those rights have nothing to do with this Guaranty. This assignment does
not prevent Payee from enforcing Guarantor’s obligations under this Guaranty in any way.

SECTION V

GUARANTOR’S DUTY TO KEEP INFORMED OF MAKER’S AND
OTHER
 GUARANTORS’ FINANCIAL CONDITION

Guarantor now is informed adequately of
Maker’s financial condition, and Guarantor agrees to keep so informed. Guarantor acknowledges that Payee has no obligation to provide Guarantor
with any present or future information concerning the financial condition of Maker and changes in Maker’s or Guarantor’s financial condition
shall not affect Guarantor’s obligations under this Guaranty. Guarantor has not relied on financial information furnished by Payee, and Guarantor
will not do so in the future.

SECTION VI
 REPRESENTATIONS AND WARRANTIES OF GUARANTOR

Guarantor represents and warrants to
Payee as follows:

(a) The execution, delivery, and
performance by Guarantor of this Guaranty do not and will not (i) conflict with or contravene any law, rule, regulation, judgment, order, or decree of
any government, governmental instrumentality, or court having jurisdiction over Guarantor or Guarantor’s activities or properties, (ii) conflict
with, or result in any default under, any agreement or instrument of any kind to which Guarantor is a party, or by which Guarantor, or any of
Guarantor’s properties, may be bound or affected, or (iii) require the consent, approval, order, authorization of, registration with, or the
giving of notice to any United States governmental authority or other governmental authority, or any person or entity not a party to the
Documents;

(b) The execution, delivery, and
performance by Guarantor of this Guaranty have been duly authorized by all necessary corporate action of Guarantor, do not require any shareholder
approval, and do not contravene any provision of Guarantor’s articles of association or bylaws;

(c) This Guaranty constitutes the
legal, valid, and binding obligation of Guarantor, enforceable against Guarantor in accordance with its terms, except as the enforceability thereof may
be limited by any applicable bankruptcy, reorganization, insolvency or other laws affecting creditors’ rights generally, or by general principles
of equity;

(d) There is no action, litigation, or
other proceeding pending, or, to Guarantor’s knowledge, threatened against Guarantor before any court, arbitrator, or administrative agency that
may have a material adverse effect on the assets or the business or financial condition of Guarantor, or that would prevent, hinder, or jeopardize the
performance by Guarantor of Guarantor’s obligations under this Guaranty;

(e) Guarantor is familiar with all the
covenants, terms, and conditions of the Agreement, the Note, and the other Documents; and

(f) Guarantor is not party to any
contract, agreement, indenture, or instrument, or subject to any restrictions that individually or in the aggregate reasonably would be expected to
have a Material Adverse Effect, or that would in any material way jeopardize the ability of Guarantor to perform its obligations under this
Guaranty.

The foregoing representations and
warranties are ongoing in nature and shall remain in force and effect until Guarantor has satisfied fully (or has been relieved of) its obligations
under this Guaranty.

SECTION VII
 SUBORDINATION OF INDEBTEDNESS OF MAKER TO GUARANTOR

Any indebtedness of Maker now or
hereafter owed to Guarantor hereby is subordinated to the indebtedness of Maker owed to Payee, including, but not limited to, the obligation of Maker
to pay interest and other amounts that would accrue and become due under or in respect of the Note or any other Document but for the filing by Maker
(or with respect to Maker) of a petition in bankruptcy, or the operation of the automatic stay under Section 362(a) of the Bankruptcy Code (11 USC
§ 362(a)) (including, without limitation, Maker’s obligations to pay principal and interest and all other charges, fees, expenses,
commissions, reimbursements, premiums, indemnities, and other payments related to or in respect of the Obligations contained in the Agreement). If
Payee so requests, any or all indebtedness of Maker to Guarantor shall be collected, enforced, and received by Guarantor as trustee for Payee and shall
be paid over to Payee on account of the Obligations, but without reducing or affecting in any manner the liability of Guarantor under the other
provisions of this Guaranty.

SECTION VIII
 DURATION OF GUARANTY

This Guaranty will take effect on the
date hereof without the necessity of any acceptance by Payee or any notice to Guarantor or to Maker, and will continue in full force and effect until
such time that all of the Obligations shall have been fully and finally paid and satisfied. This Guaranty shall be reinstated automatically if any
payment made in respect of the Obligations is reclaimed in a bankruptcy or receivership case or proceeding, until Payee is paid the reclaimed amount by
Guarantor or another party and such amount is not subject to further reclamation.

SECTION IX
 EVENTS OF DEFAULT; REMEDIES

9.1 Events of Default. The term
“Event of Default,” whenever used in this Guaranty, means an Event of Default under the Note or the Security Agreement.

9.2 Effect of an Event of
Default. Upon the occurrence and during the continuance of any Event of Default, the Obligations then, or at any time thereafter, at the option of
Payee in accordance with the terms of the Note and the Security Agreement, immediately shall become due and payable without notice or demand, and Payee
shall have an immediate right to pursue the remedies provided in this Guaranty.

9.3 Remedies. If an Event of
Default occurs and is continuing, Payee shall have all rights and remedies provided by law including, but not limited to, the right of Payee to
commence an action against Guarantor to recover any amount owed by Guarantor to Payee pursuant to the terms of this Guaranty. Guarantor hereby waives
any notice of the occurrence of any Event of Default.

SECTION X
 GENERAL PROVISIONS

10.1 Benefits of Agreement.
Guarantor agrees that (a) this Guaranty shall inure to the benefit of and may be enforced by Payee (and Payee’s successors and assigns), and any
subsequent holder of this Guaranty, the Note, and the other Documents, and (b) this Guaranty shall be binding upon and enforceable against Guarantor
and Guarantor’s successors and permitted assigns, if any.

10.2 Assignment. Guarantor
agrees that no assignment of its obligations under this Guaranty may be made without the prior, written consent of Payee at the time of such assignment
(which consent may be withheld by Payee in Payee’s sole and absolute discretion). Subject to the terms of the Security Agreement, Payee may assign
any or all of Payee’s rights and interests in and under this Guaranty, the Note, and the Security Agreement without the consent of Maker,
Guarantor, or any other person or entity.

10.3 Governing Law. This
Guaranty shall be construed according to the laws of the State of Delaware, without giving effect to its principles of conflicts of
law.

10.4 Entire Agreement; Merger.
This Guaranty constitutes the entire understanding between Payee and Guarantor with respect to Guarantor’s agreement to guarantee payment of the
Obligations. No course of prior dealing between or among the parties, no usage of trade, and no parol or extrinsic evidence of any nature shall be used
to supplement or modify any terms of this Guaranty. There are no conditions to the full effectiveness of this Guaranty. All prior and contemporaneous
negotiations, understandings, and agreements between Guarantor and Payee with respect to the subject matter hereof are merged in this
Guaranty.

10.5 Invalid Provisions. If any
provision of this Guaranty is invalid, illegal, or unenforceable, such provision shall be considered severed from the rest of this Guaranty and the
remaining provisions shall continue in full force and effect as if the invalid provision had not been included. This Guaranty may be changed, modified,
or supplemented only by means of a written agreement signed by Guarantor and Payee at the time of such change, modification, or
supplement.

10.6 Attorney Fees and Collection
Expenses. If an Event of Default occurs, Payee shall be entitled to recover from Guarantor, upon demand, any reasonable out-of-pocket costs and
expenses incurred in connection with the preservation of rights under, and enforcement of, this Guaranty and the other Documents, whether or not any
lawsuit or arbitration proceeding is commenced, in all such cases including, without limitation, reasonable attorney fees and costs. Costs and expenses
as referred to above shall include, without  limitation, a  reasonable hourly rate for collection personnel, whether employed in-house or otherwise,
overhead costs as reasonably allocated to the collection effort, and all other reasonable out-of-pocket expenses actually incurred. Reasonable
attorneys’ fees and costs shall include, without limitation, reasonable attorneys’ fees and costs incurred in connection with any bankruptcy
case or other insolvency proceeding commenced by or against Maker, including all reasonable fees incurred in connection with (a) moving for relief from
the automatic stay, to convert or dismiss the case or proceeding, or to appoint a trustee or examiner, or (b) proposing or opposing confirmation of a
plan of reorganization or liquidation, in any case without regard to the identity of the prevailing party.

10.7 Consent to Jurisdiction and
Venue. Guarantor hereby (a) irrevocably submits to the jurisdiction and venue of any state or federal court sitting in the State of Delaware,
U.S.A., in any action or proceeding brought to enforce this Guaranty, or otherwise arising out of or relating to this Guaranty; (b) irrevocably waives
to the fullest extent permitted by law any objection that Guarantor now or hereafter may have to the laying of venue in any such action or proceeding
in any such forum; and (c) further irrevocably waives any claim that any such forum is an inconvenient forum. Guarantor agrees that a final judgment in
any such action or proceeding shall be conclusive and may be enforced in any other jurisdiction by suit on the judgment, or in any other manner
provided by law. Nothing in this Guaranty shall impair the right of Payee to bring any action or proceeding against Guarantor in any court of any other
jurisdiction.

10.8 Waiver of Jury Trial.
GUARANTOR HEREBY WAIVES ITS RIGHT TO TRIAL BY JURY OF ANY CLAIM IT HAS OR HEREAFTER MAY HAVE AGAINST PAYEE (INCLUDING CROSS-CLAIMS AND
COUNTERCLAIMS), INCLUDING, BUT NOT LIMITED TO, ANY CLAIM ARISING UNDER, IN CONNECTION WITH, OR IN RELATION TO THIS GUARANTY.

10.9 Direct, Unconditional
Obligation. GUARANTOR UNDERSTANDS THAT PAYEE DOES NOT HAVE TO PURSUE MAKER OR PURSUE ANY OTHER REMEDIES BEFORE DEMANDING PAYMENT FROM GUARANTOR.
GUARANTOR FURTHER UNDERSTANDS THAT IT WILL HAVE TO PAY AMOUNTS DUE FROM VESTA EVEN IF MAKER OR ANY OTHER GUARANTOR OF THE OBLIGATIONS DOES NOT MAKE THE
PAYMENTS OR OTHERWISE IS RELIEVED OF THE OBLIGATION TO MAKE PAYMENTS.

PLANT HEALTH CARE plc
(“Guarantor”)

By /s/ Walter V. Bratkowski

Name: Walter V. Bratkowski

Title: CFO and Finance DirectorSECURITY AGREEMENT AND
PATENT AND TRADEMARK
 SECURITY AGREEMENT

This Security Agreement and Patent and
Trademark Security Agreement (the “Security Agreement”) is entered into as of February 28, 2007, between PLANT HEALTH CARE, INC., a
Pennsylvania corporation (“Debtor”) and EDEN BIOSCIENCE CORPORATION, a Washington corporation (“Secured Party”).

RECITALS

A. Pursuant to the terms of an Asset
Purchase Agreement dated as of December 1, 2006 (the “Agreement”) between Debtor and Secured Party, Secured Party is accepting from Debtor a
Secured Promissory Note in the original principal amount of $700,751 (the “Note”) as a portion of the consideration paid pursuant to the
Agreement. The Note, the Guaranty, this Security Agreement, and the Agreement, along with all amendments and modifications thereto, and all instruments
delivered in connection therewith, are referred to as the “Documents.” Capitalized terms used in this Security Agreement that are not defined
herein have the meanings assigned to those terms in the Agreement.

B. One of the conditions precedent to
the agreement of Secured Party to close the transactions contemplated by the Agreement is that Debtor execute this Security Agreement and thereby grant
Secured Party a first priority security interest in certain personal property of Debtor acquired from Secured Party pursuant to the Agreement and
described in paragraph 1 of this Security Agreement.

NOW, THEREFORE, for valuable
consideration, the receipt and sufficiency of which hereby are acknowledged, Debtor and Secured Party agree as follows:

AGREEMENT

1. Security Agreement. Debtor
hereby grants to Secured Party, on behalf of Secured Party, a security interest in the Collateral to secure the Obligations (as defined in the
Guaranty) and agrees that Secured Party shall have the rights stated in this Security Agreement with respect to the Collateral, in addition to all
other rights that Secured Party may have under applicable law and the other Documents. As used herein, the term “Collateral” means the
following described property of Debtor, whether now owned or hereafter acquired, whether now existing or hereafter arising, and wherever
located:

	
	 	all of the “Equipment” and “Assigned Intellectual
Property” as defined in the Agreement and all present and future right, title and interest of Debtor in and to that Exclusive License Agreement,
dated as of May 1, 1995, between Secured Party and Cornell Research Foundation, as the same may be amended, modified, and the like from time to time
(the “License”), solely to the extent permitted under such License, along with all proceeds (including insurance proceeds) of the
same. In addition, the word “Collateral” includes all records and data relating to any of the property described above, whether in the form
of a writing, photograph, microfilm, microfiche, or electronic media, together with all of Debtor’s right, title, and interest in and to all
computer software required to utilize, create, maintain, and process any such records or data on electronic media.

2. Representations and
Warranties. Debtor represents and warrants to Secured Party as follows:

(a) The execution, delivery, and
performance by Debtor of this Security Agreement do not and will not (i) conflict with or contravene any law, rule, regulation, judgment, order, or
decree of any government, governmental instrumentality, or court having jurisdiction over Debtor or Debtor’s activities or properties, (ii)
conflict with, or result in any default under, any agreement or instrument of any kind to which Debtor is a party, or by which Debtor, or any of
Debtor’s properties, may be bound or affected (other than this Security Agreement), or (iii) require the consent, approval, order, authorization
of, registration with, or the giving of notice to any United States governmental authority or other governmental authority, or any person or entity not
a party to the Documents;

(b) The execution, delivery, and
performance by Debtor of this Security Agreement has been duly authorized by all necessary corporate action of Debtor, do not require any shareholder
approval, and do not contravene any provision of Debtor’s articles of incorporation or bylaws;

(c) This Security Agreement constitutes
the legal, valid, and binding obligation of Debtor, enforceable against Debtor in accordance with its terms, except as the enforceability thereof may
be limited by any applicable bankruptcy, reorganization, insolvency or other laws affecting creditors’ rights generally or by general principles
of equity;

(d) There is no action, litigation, or
other proceeding pending, or, to Debtor’s knowledge, threatened against Debtor before any court, arbitrator, or administrative agency that may
have a material adverse effect on the assets or the business or financial condition of Debtor, or that would prevent, hinder, or jeopardize the
performance by Debtor of Debtor’s obligations under this Security Agreement, except for such actions disclosed on the Secured Parties Schedules to
the Agreement;

(e) Debtor is familiar with all the
covenants, terms, and conditions of the Agreement, the Note and the Guaranty; and

(f) Debtor is not party to any
contract, agreement, indenture, or instrument, or subject to any restriction individually or in the aggregate that is reasonably likely to have a
material adverse effect on Debtor’s financial condition or business, or that would in any way jeopardize the ability of Debtor to perform
Debtor’s obligations under this Security Agreement.

The foregoing representations and warranties are on-going in
nature and shall remain in force and effect until Debtor has satisfied fully (or has been relieved of) Debtor’s obligations under this Security
Agreement.

3. Perfection of Secured
Party’s Security Interest. Debtor agrees to execute such financing statements and to take whatever other reasonable actions are requested by
Secured Party to perfect and continue Secured Party’s first lien security interest in the Collateral. Debtor hereby appoints Secured Party as its
irrevocable attorney-in-fact for the purpose of executing any documents necessary to perfect or to continue the security interest granted in this
Security Agreement. In addition, Debtor hereby authorizes Secured Party at any time, and without further authorization from Debtor, to file a financing
statement with respect to Debtor and the Collateral and to take such other lawful actions reasonably deemed necessary or desirable by Secured Party to
perfect, or continue the perfection of, its security interest in the Collateral. Debtor will reimburse Secured Party for all expenses, up to $2,500,
reasonably incurred in connection with the perfection and the continuation of the perfection of Secured Party’s security interest in the
Collateral. This is a continuing Security Agreement and will continue in effect until all of the Obligations are indefeasibly satisfied in
full.

4. Patent and Trademark Filings.
Secured Party is hereby authorized to file this Agreement, or a summary thereof, with the U.S. Patent and Trademark Office in order to evidence Secured
Party’s rights in any Assigned Intellectual Property. Debtor hereby appoints Secured Party as its attorney-in-fact to execute, and agrees upon
request to execute, such other and further documents as Secured Party may reasonably deem necessary in order to evidence such rights, including
execution of summaries thereof by Secured Party in the name of Debtor.

5. Transactions Involving
Collateral. Except for accounts collected in the ordinary course of Debtor’s business or the disposition of assets, including used equipment,
in the ordinary course of Debtor’s business, Debtor shall not sell, offer to sell, or otherwise transfer or dispose of the Collateral in any
manner not permitted by the Agreement. Debtor shall not pledge, mortgage, encumber, or otherwise permit the Collateral to be subject to any lien,
security interest, encumbrance, or charge, other than the security interest provided for in this Security Agreement, without the prior written consent
of Secured Party.

Notwithstanding the foregoing, Debtor
may sell items of Equipment from time to time without Secured Party’s consent, subject to Debtor’s obligation to prepay the Note as set forth
therein.

6. Termination of Security
Interest. At such time as all payment obligations under the Note have been satisfied in full, Secured Party shall execute and deliver to Debtor all
deeds, assignments, termination statements and other instruments and to take such other actions as may be necessary or reasonably requested by Debtor
to re-vest in Debtor full title to the Collateral, and Debtor hereby appoints Secured Party as its irrevocable attorney-in-fact from and after such
time for the purpose of executing any such documents necessary to terminate the security interest granted herein.

7. Title. Debtor shall defend
the rights of Secured Party in the Collateral against the claims and demands of all other persons.

8. Maintenance and Inspection of
Collateral. Debtor shall maintain all tangible Collateral in substantially the same condition and repair (reasonable wear and tear excepted) as it
was in when acquired from Secured Party pursuant to the Agreement. Debtor will not commit or permit damage to or destruction of any material part of
the Collateral. Secured Party, and its designated representatives and agents, shall have the right to examine, inspect, and audit the Collateral
wherever located in accordance with the Agreement. Debtor shall prosecute to completion all pending applications for intellectual property protection
of the Assigned Intellectual Property, shall maintain in full force and effect all current registrations thereof, and shall protect and defend against
all competing applications or registrations of intellectual property that may conflict therewith; provided that nothing herein shall require Debtor to
prosecute or maintain any such applications in connection with Assigned Intellectual Property for which Debtor’s board of directors has determined
in good faith that the loss or abandonment of such portion of the Assigned Intellectual Property would not have a material adverse effect on the value
of the Collateral in the aggregate or on the ability of Debtor to perform Debtor’s obligations under this Security Agreement.

9. Compliance With Governmental
Requirements. Debtor shall comply promptly in all material respects with all laws, ordinances, and regulations of all governmental authorities
applicable to the production, disposition, or use of the Collateral, unless the failure to do so reasonably would not be expected to have a Material
Adverse Effect. Debtor may contest in good faith any such law, ordinance, or regulation and withhold compliance during any proceeding, including
appropriate appeals, so long as Secured Party’s interest in the Collateral, in Secured Party’s reasonable opinion, is not materially
jeopardized.

10. Maintenance of Casualty
Insurance. Debtor shall procure and maintain all risks insurance, including without limitation fire, theft, and liability coverage together with
such other insurance as is customary in the industry with respect to the Collateral, in form, amounts, coverages, and basis as is customary in the
industry and issued by a company or companies reasonably acceptable to Secured Party. Debtor, upon request of Secured Party, will deliver to Secured
Party from time to time the policies or certificates of insurance in form reasonably satisfactory to Secured Party. Debtor also will make reasonable
efforts to obtain stipulations that coverages will not be cancelled or diminished without at least ten days prior written notice to Secured Party and
not including any disclaimer of the insurer’s liability for failure to give such a notice. In connection with all policies covering assets in
which Secured Party holds a security interest, Debtor will provide Secured Party with such loss payable or other endorsements as Secured Party
reasonably may require. If Debtor at any time fails to obtain or maintain any insurance as required under this Security Agreement, Secured Party may
(but shall not be obligated to), after 30 days’ notice to Debtor, obtain such insurance as Secured Party deems appropriate, including if it so
chooses “single interest insurance,” which will cover only Secured Party’s interest in the Collateral. Unless Debtor provides Secured
Party with evidence of the insurance coverage as required herein, Secured Party may purchase insurance at Debtor’s expense to protect Secured
Party’s interest. This insurance may, but need not, also protect Debtor’s interest. Debtor is responsible for the cost of any insurance
purchased by Secured Party. The cost of this insurance may be added to the indebtedness secured hereunder.

11. Application of Insurance
Proceeds. Debtor promptly shall notify Secured Party of any loss or damage to any material portion of the Collateral. Secured Party may make proof
of loss if Debtor fails to

do so within 15 days of the
casualty. All proceeds of any insurance on the Collateral, including accrued proceeds thereon, shall be part of the Collateral.

12. Insurance Reports. Not more
frequently than quarterly, upon the request of Secured Party, Debtor shall furnish to Secured Party reports on each existing policy of insurance
covering any of the Collateral showing such information as Secured Party reasonably may request including the following: (a) the name of the insurer;
(b) the risks insured; (c) the amount of the policy; (d) the property insured; (e) the then current value on the basis of which insurance has been
obtained and the manner of determining that value; and (f) the expiration date of the policy.

13. Debtor’s Right to
Possession. Until the occurrence of an Event of Default, Debtor shall have possession of the tangible personal property and beneficial use of all
the Collateral and may use it in any lawful manner not inconsistent with this Security Agreement or the other Documents, provided that Debtor’s
right to possession and beneficial use shall not apply to any Collateral where possession of the Collateral by Secured Party is required by law to
perfect Secured Party’s security interest in such Collateral. If Secured Party at any time has possession of any Collateral, whether before or
after an Event of Default, Secured Party shall exercise such reasonable care in the custody and preservation of the Collateral as Debtor shall request
or as Secured Party would afford to its own property, but failure to honor any request by Debtor shall not of itself be deemed to be a failure to
exercise reasonable care. Secured Party shall not be required to take any steps necessary to preserve any rights in the Collateral against prior
secured parties, or to protect, preserve, or maintain any security interest given to secure the Collateral.

14. Expenditures by Secured
Party. If not discharged or paid when due, Secured Party may (but shall not be obligated to), after prior written notice to Debtor, discharge or
pay any amounts required to be discharged or paid by Debtor under this Security Agreement, including without limitation all taxes, liens, security
interests, encumbrances, and other claims at any time levied or placed on the Collateral. Secured Party also may (but shall not be obligated to) pay
all costs for insuring, maintaining, and preserving the Collateral in accordance with the terms of this Security Agreement. All such expenditures
incurred or paid by Secured Party for such purposes then will bear interest at the Default Rate from the date incurred or paid by Secured Party to the
date of repayment by Debtor. All such expenses shall become a part of the Obligations and, at Secured Party’s option, will (a) be payable on
demand, (b) be added to the balance of the Agreement and be apportioned among and be payable with any installment payments to become due during either
(i) the term of any applicable insurance policy or (ii) the remaining term of the Agreement, or (c) be treated as a balloon payment that will be due
and payable at the Agreement’s maturity. This Security Agreement also will secure payment of these amounts. Such right shall be in addition to all
other rights and remedies to which Secured Party may be entitled upon the occurrence of an Event of Default.

15. Events of Default. Each of
the following shall constitute an Event of Default under this Security Agreement:

(a) The occurrence of an Event of
Default under the Note;

(b) Any warranty, representation, or
statement made or furnished to Secured Party by or on behalf of Debtor under this Security Agreement is false or misleading in any material respect,
either now or at the time made or furnished; and

(c) This Security Agreement, the Note
or the Guaranty ceases to be in full force and effect (including the failure of any document by its terms to create a valid and perfected first
priority security interest or lien in all or any portion of the Collateral) at any time and for any reason.

16. Rights and Remedies on
Default. If an Event of Default occurs under this Security Agreement, at any time thereafter, Secured Party shall have all the rights of a secured
party under the Delaware Uniform Commercial Code. In addition and without limitation, Secured Party may exercise any one or more of the following
rights and remedies:

(a) Secured Party may declare the
entire Obligations, including any prepayment charge that Debtor would be required to pay, immediately due and payable, following written notice to
Debtor;

(b) Secured Party may require Debtor to
deliver to Secured Party all or any portion of the Collateral and any and all certificates of title and other documents relating to the Collateral.
Secured Party may require Debtor to assemble the Collateral and make it available to Secured Party at a place to be designated by Secured Party.
Secured Party also shall have full power to enter upon the property of Debtor to take possession of and remove the Collateral. If the Collateral
contains other goods not covered by this Security Agreement at the time of repossession, Debtor agrees that Secured Party may take such other goods,
provided that Secured Party makes reasonable efforts to return them to Debtor after repossession;

(c) Secured Party shall have full power
to sell, lease, transfer, or otherwise deal with the Collateral or proceeds thereof in its own name or that of Debtor. Secured Party may sell the
Collateral at public auction or private sale. Unless the Collateral threatens to decline speedily in value or is of a type customarily sold on a
recognized market, Secured Party will give Debtor reasonable notice of the time after which any private sale or any other intended disposition of the
Collateral is to be made unless Debtor has signed, after an Event of Default occurs, a statement renouncing or modifying Debtor’s right to
notification of sale. The requirements of reasonable notice shall be met if such notice is given at least ten days before the time of the sale or
disposition. All expenses relating to the disposition of the Collateral, including, without limitation, the expenses of retaking, holding, insuring,
preparing for sale and selling the Collateral, shall become a part of the Obligations secured by this Security Agreement and shall be payable on
demand, with interest at the rate applicable to Prime Rate Loans from the date of expenditure until repaid;

(d) To the extent permitted by
applicable law, Secured Party shall have the following rights and remedies regarding the appointment of a receiver: (i) Secured Party may have a
receiver appointed as a matter of right, (ii) the receiver may be an employee of Secured Party and may serve without bond, and (iii) all fees of the
receiver and his or her attorney shall become part of the Obligations secured by this Security Agreement and shall be payable on demand, with interest
as set forth in the Note (including default interest), until repaid;

(e) Secured Party, either itself or
through a receiver, may collect the payments, rents, income, and revenues from the Collateral. Secured Party at any time in its discretion may transfer
any Collateral into its own name or that of its nominee and receive the payments, rents, income, and revenues therefrom and hold the same as security
for the Obligations or apply it to payment of the Obligations in such order of preference as Secured Party may determine. Insofar as the Collateral
consists of accounts, general intangibles, insurance policies, instruments, chattel paper, chooses in action, or similar property, Secured Party may
demand, collect, receipt for, settle, compromise, adjust, sue for, foreclose, or realize on the Collateral as Secured Party may determine. For these
purposes, Secured Party may, on behalf of and in the name of Debtor, receive, open, and dispose of mail addressed to Debtor; change any address to
which mail and payments are to be sent; and endorse notes, checks, drafts, money orders, documents of title, instruments, and items pertaining to
payment, shipment, or storage of any Collateral. To facilitate collection, Secured Party may notify account debtors and obligors on any Collateral to
make payments directly to Secured Party;

(f) If Secured Party chooses to sell
any or all of the Collateral and except as otherwise set forth in the Note, Secured Party may obtain a judgment against Debtor for any deficiency
remaining on the Obligations due to Secured Party after application of all amounts received from the exercise of the rights provided in this Security
Agreement. Debtor shall be liable for a deficiency even if the transaction described in this subsection is a sale of accounts or chattel
paper;

(g) Except as may be expressly set
forth to the contrary in this Security Agreement, Secured Party shall have all the rights and remedies of a secured creditor under the provisions of
the Uniform Commercial Code, as may be amended from time to time. In addition, Secured Party shall have and may exercise any or all other rights and
remedies it may have available at law, in equity, or otherwise; and

(h) All of Secured Party’s rights
and remedies, whether evidenced by this Security Agreement or the other Documents or by any other writing, shall be cumulative and may be exercised
singularly or concurrently. Election by Secured Party to pursue any remedy shall not exclude pursuit of any other remedy, and an election to make
expenditures or to take action to perform an obligation of Debtor under this Security Agreement, after Debtor’s failure to perform, shall not
affect Secured Party’s right to declare a default and to exercise its remedies.

17. Amendments and Waivers. No
term, provision, or condition of this Security Agreement may be amended, waived, discharged, or terminated, except by a written instrument signed by
Secured Party and, in the case of amendments, by Debtor.

18. Entire Agreement. This
Security Agreement and the other Documents set forth and constitute the entire agreement between Secured Party and Debtor with respect to the
Obligations and the Collateral. No oral promise or agreement of any kind or nature, other than those that have been reduced to writing and have been
set forth in this Security Agreement and in the other Documents, has been made between Secured Party and Debtor with respect to the Obligations or the
Collateral.

19. Applicable Law. This
Security Agreement shall be governed by and construed in accordance with the laws of the State of Delaware, without reference to its choice of law
principles.

20. Expenses. Debtor agrees to
pay upon demand all of Secured Party’s reasonable costs and expenses, including attorneys’ fees, incurred in connection with the enforcement
of this Security Agreement, subject to the second to the last sentence of Section 3 of this Security Agreement. Secured Party may pay someone else to
help enforce this Security Agreement, and Debtor shall pay the costs and expenses of such enforcement. Costs and expenses include Secured Party’s
reasonable attorneys’ fees and legal expenses whether or not there is a lawsuit, including attorneys’ fees and legal expenses for bankruptcy
proceedings (and including efforts to modify or vacate any automatic stay or injunction), appeals, and any anticipated post-judgment collection
services. Debtor also shall pay all court costs and such additional fees as may be directed by the court.

21. Jurisdiction. Debtor hereby
irrevocably submits to the venue and jurisdiction of any state or federal court sitting in the State of Delaware, in any action or proceeding brought
to enforce or otherwise arising out of or relating to this Security Agreement. Debtor irrevocably waives to the fullest extent permitted by law any
objection that Debtor now or hereafter may have to the laying of venue in any such action or proceeding in any such forum, and hereby further
irrevocably waives any claim that any such forum is an inconvenient forum. Debtor agrees that a final judgment in any such action or proceeding may be
enforced in any other jurisdiction by suit on the judgment, or in any other manner provided by law. Nothing in this paragraph 21 of this Security
Agreement shall impair the right of Secured Party to bring any action or proceeding hereunder in the courts of any other jurisdiction. In that regard,
Debtor irrevocably submits to the nonexclusive jurisdiction of the appropriate courts of the jurisdiction in which Debtor is organized, or sitting in
any place where property or an office of Debtor is located.

22. Caption Headings. Caption
headings in this Security Agreement are for convenience purposes only and are not to be used to interpret or define the provisions of this Security
Agreement.

23. Notices. All notices
required to be given under this Security Agreement shall be given in the manner specified in the Agreement.

24. Power of Attorney. Effective
only during the continuance of an Event of Default, Debtor hereby appoints Secured Party as its true and lawful attorney-in-fact, irrevocably, with
full power of substitution to do the following: (a) to demand, collect, receive, receipt for, sue and recover all sums of money or other property which
may now or hereafter become due, owing or payable from the Collateral; (b) to execute, sign and endorse any and all claims, Instruments, receipts,
checks, drafts or warrants issued in payment for the Collateral; (c) to settle or compromise any and all claims arising under the Collateral, and, in
the place and stead of Debtor, to execute and deliver its release and settlement for the claim; and (d) to file any claim or claims or to take any
action or institute or take part in any proceedings, either in its own name or in the name

of Debtor, or otherwise, which in
the discretion of Secured Party may seem to be necessary or advisable. This power is given as security for the Obligations, and the authority hereby
conferred is and shall be irrevocable and shall remain in full force and effect until renounced by Secured Party.

25. Severability. If a court of
competent jurisdiction finds any provision of this Security Agreement to be invalid or unenforceable as to any person or circumstance, such finding
shall not render that provision invalid or unenforceable as to any other persons or circumstances. If feasible, any such offending provision shall be
deemed to be modified to be within the limits of enforceability or validity. However, if the offending provision cannot be so modified, it shall be
stricken and all other provisions of this Security Agreement in all other respects shall remain valid and enforceable.

26. Successor Interests. Subject
to the limitations set forth above on transfer of the Collateral, this Security Agreement shall be binding upon and inure to the benefit of the
parties, and their successors and assigns.

27. Waiver. Secured Party shall
not be deemed to have waived any rights under this Security Agreement unless such waiver is given in writing and signed by Secured Party. No delay or
omission on the part of Secured Party in exercising any right shall operate as a waiver of such right or any other right. A waiver by Secured Party of
a provision of this Security Agreement shall not prejudice or constitute a waiver of Secured Party’s right otherwise to demand strict compliance
with that provision or any other provision of this Security Agreement. No prior waiver by Secured Party, nor any course of dealing between Secured
Party and Debtor, shall constitute a waiver of any of Secured Party’s rights, or of any of Debtor’s obligations, as to any future
transactions. Whenever the consent of Secured Party is required under this Security Agreement, the granting of such consent by Secured Party in any
instance shall not constitute continuing consent to subsequent instances where such consent is required and in all cases such consent may be granted or
withheld in the sole discretion of Secured Party.

28. Statutory
Notice.  ORAL AGREEMENTS OR ORAL COMMITMENTS TO LOAN MONEY, EXTEND CREDIT, OR FORBEAR FROM ENFORCING REPAYMENT OF A DEBT ARE NOT
ENFORCEABLE UNDER WASHINGTON LAW (IF AND TO THE EXTENT APPLICABLE).

	PLANT HEALTH CARE, INC. (“Debtor”)	 	 	   	EDEN BIOSCIENCE CORPORATION
(“Secured
Party”)
 
	By /s/ Walter V. Bratkowski
	   	   	   	By /s/ Bradley S. Powell

	Name: Walter V. Bratkowski
	   	   	   	Name: Bradley S. Powell

	Title: CFO and Treasurer
	   	   	   	Title: President

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