<PAGE>

                                                                   Exhibit 10.13

                               EMPLOYMENT AGREEMENT

     This EMPLOYMENT AGREEMENT ("Agreement") is made and entered into as of
September 5, 2001, by and between FRESH AMERICA CORP., a Texas corporation
("Company"), and Gary Wiener, an individual resident of the State of Texas
("Employee").

                                 R E C I T A L S

     WHEREAS, Company desires to obtain the services of Employee upon the terms
and conditions set forth herein; and

     WHEREAS, Employee desires to be employed by Company upon the terms and
conditions set forth herein; and

     WHEREAS, Company believes that the retention of Employee in employment with
Company is critical to the success of Company;

     NOW, THEREFORE, for and in consideration of the mutual agreements herein
contained, and for other good and valuable consideration, the receipt and legal
sufficiency of which are hereby acknowledged, Company and Employee hereby agree
as follows:

                                   ARTICLE I.

     Section 1.01.  Employment.  Company hereby  agrees to employ Employee in
                    ----------
the capacity of COO and Employee agrees to be employed by Company in such
capacity, for a period and time commitment described below, unless terminated
earlier as provided in Article III.

     Section 1.02.  Term of Employment ("Term").
                    ---------------------------

     Company shall employ Employee as of the date set forth above and continuing
for three (3) years from such date, unless terminated earlier pursuant to the
provisions of this Agreement.  The Term may be extended by a written extension
agreement signed by both parties.

     Section 1.03.  Duties.  Employee shall be subject to the direction and
                    ------
supervision of Company and shall have those duties and responsibilities
consistent with the position in which he/she is employed.  During the Term,
Employee agrees to perform  the duties assigned to the best of Employee's
ability and to devote Employee's full professional working time, attention, and
energies to the transaction of Company's business so as to further its best
interests.  During the Term, Employee shall not be employed or otherwise engaged
in any other business or enterprise without the written permission of Company.
Employee shall comply with all existing policies, standards, and regulations of
Company and hereafter as agreed and adopted by the Executive Committee.
Employee agrees that, during the Term, Employee shall refrain from making
disparaging remarks to third parties about Company or any affiliate of Company.

                                       1
<PAGE>

                                  ARTICLE II.

     Section 2.01.  Compensation.
                    ------------

          (a)  Salary.  During the Term, as compensation for services rendered
               ------
     hereunder and in consideration of this Agreement, the Company shall pay
     Employee a salary, in accordance with the Company's then-prevailing payroll
     practices, at the annual rate of $160,000. Employee's base salary shall be
     subject to review and modification from time to time by Employer but may
     not be decreased during the term of this Agreement.

          (b)  Benefits.  During the Term, as additional compensation, Employee
               --------
     shall be entitled to participate in and receive all benefits under any
     welfare benefit plan or program (including, without limitation, medical,
     dental, disability, group life, including accidental death and
     dismemberment, and business travel insurance plans and programs), any
     retirement savings plan or program (including, without limitation, 401(k)
     and pension plans), and such other perquisites of office (including,
     without limitation, paid vacation and holidays) as the Company may, from
     time to time and in its sole discretion, make available generally to
     similarly situated officers or managers of the Company provided however,
     the current benefit level of the Employee will not be materially reduced.
     Such participation shall be subject to the terms and conditions of such
     plans or programs, including, but not limited to, such generally applicable
     eligibility provisions as may be in effect from time to time.

          (c)  Expense Reimbursement.  The Company shall reimburse Employee for
               ---------------------
     all reasonable, ordinary, and necessary business expenses incurred in the
     performance of Employee's duties hereunder in accordance with and subject
     to the terms and conditions of the Company's then-prevailing expense
     policy.  As a condition precedent to obtaining such reimbursement, Employee
     shall provide to the Company any and all statements, bills, or receipts
     evidencing the expenses for which Employee seeks reimbursement, and such
     other related information or materials as the Company may from time to time
     reasonably require.

          (d)  Bonus.  Employee shall be eligible for bonuses  according to
               -----
     Schedule 1, attached hereto.

                                  ARTICLE III.

     Section 3.01.  Termination.  Unless Employee's employment is terminated
                    -----------
pursuant to this Paragraph 3.01 (a) - (d), the Company shall continue to employ
Employee and Employee shall continue to serve the Company throughout the Term.

          (a)  Death.  This Agreement shall terminate automatically upon
               -----
     Employee's death.

          (b)  Disability.  This Agreement shall terminate upon Employee's
               ----------
     "Disability", as defined below and the payment of benefits under the
     Company's disability insurance

                                       2
<PAGE>

     program, if any, shall satisfy the Company's obligations under the
     foregoing Paragraph 2.01. For purposes of this Agreement, Employee shall be
     deemed to be under a Disability if Employee shall be unable, by virtue of
     illness or physical or mental incapacity or disability (from any cause or
     causes whatsoever), to perform Employee's essential job functions
     hereunder, with reasonable accommodation, in substantially the manner and
     to the extent required hereunder prior to the commencement of such
     disability, for a period exceeding ninety (90) consecutive days. In light
     of the unique nature of Employee's services, the undue burden on the
     Company that would result from Employee's long term absence, the Company
     shall have the right to terminate Employee's employment hereunder in the
     event Employee shall remain under a Disability for a period exceeding six
     (6) months, such termination to occur at the end of the six-month period
     during the continuance of such disability.

          (c)  For Cause.  The Company shall have the right to terminate
               ---------
     Employee's employment and this Agreement for "Cause". For purposes of this
     Agreement, Cause shall include: (i) material default or other material
     breach by Employee of Employee's obligations hereunder; (ii) failure by
     Employee to perform diligently Employee's duties hereunder; or (iii)
     misconduct, dishonesty, insubordination, or other acts by Employee damaging
     to the Company's relationships with its customers, suppliers, or employees,
     including, without limitation: indictment or plea of guilty or no contest
     to a felony or any crime involving moral turpitude, dishonesty, or theft;
     and failure by Employee to comply (after being directed to do so) with
     applicable laws or governmental regulations with respect to Company
     operations.

          (d)  Voluntary Termination.  In the event that Employee voluntarily
               ---------------------
     terminates his/her employment for any reason, Employee shall retain all
     rights under Article II Section 2.01 (c).

     Section 3.02.  Notice of Termination.  Any purported termination of
                    ---------------------
Employee's employment by Company or by Employee (other than termination due to
death) shall be communicated by written two weeks' Notice of Termination to the
other party that shall indicate the specific termination provision in this
Agreement relied upon and shall set forth in reasonable detail the facts and
circumstances claimed to provide a basis for termination of Employee's
employment under the provision so indicated. In the event of termination of this
Agreement for any reason, the payments (if any) required to be provided to
Employee pursuant to this Paragraph 3.01 shall be in full and complete
satisfaction of any and all obligations owing to Employee pursuant to this
Agreement except for expense reimbursements or as otherwise specifically
detailed in the Agreement.

          Section 3.03.  Ownership and Return of Materials.  All records,
                         ---------------------------------
materials, lists, files, manuals, tapes, and all other written or recorded data
and information in whatever form ("Materials") that may be used by, or made
available to Employee during employment hereunder are and shall remain the sole
property of Company. Upon the voluntary or involuntary

                                       3
<PAGE>

termination of Employee's employment hereunder, Employee shall immediately
return or cause to be returned same to Company.

                                  ARTICLE IV.

     Section 4.01.  Non-Competition, Non-Solicitation and Confidentiality.
                    -----------------------------------------------------
Employee expressly recognizes and agrees that Company has acquired a valuable
and extensive clientele for its produce business and that Company's business
connections and clients have been acquired at great expense and are of great
value to Company. Employee further recognizes and agrees that Employee will
become familiar with and possessed of the manner, method, secrets, and
confidential and proprietary information pertaining to Company's business
methods and clients and that by virtue of this Agreement, Employee will become
personally acquainted with the clients, business methods, and trade secrets of
Company.

     In recognition and in consideration of the foregoing, Employee expressly
covenants and agrees that during the term of this Agreement and continuing until
the Non-competition Termination Date (as hereinafter defined), Employee is
prohibited from competing, soliciting employees and customers, and divulging
confidential information as indicated below.  Employee further agrees that the
provisions of Article IV shall survive the expiration or termination of this
Agreement for any reason.

          (a)  Non-Competition During Employment.  While Employee is employed by
               ---------------------------------
     the Company, Employee shall not, directly or indirectly, whether or not for
     compensation, and whether or not as an employee, be engaged in or have a
     financial interest (as defined below) in any other business, continue or
     assume any other corporate affiliations, or pursue any other commercial
     activities, duties, or pursuits  which would in any way compete with the
     Company or result in a conflict of interest for the Employee without the
     prior written consent of the Company.

               (i)  Financial Interest Defined.  For purposes of this  Section
                    --------------------------
          4.01(a), Employee shall be deemed to be engaged in or to have a
          Financial Interest in a business if Employee is an employee, officer,
          director, consultant, independent contractor, proprietor, or partner
          of any person, partnership, corporation, trust or other entity which
          is engaged in such business, or if Employee directly or indirectly
          performs services for such entity or if Employee or any member of
          Employee's immediate family beneficially owns an equity interest, or
          interest convertible into equity, in any such entity; provided,
          however, that the foregoing shall not prohibit Employee or a member of
          Employee's immediate family from owning, for the purpose of passive
          investment, less than 2% of any class of securities of any publicly
          held corporation.

          (b)  Non-Competition After Employment.  Employee agrees that for a
               --------------------------------
     period of one (1) year after termination of Employee's employment, for
     whatever reason, ("Non-Competition Termination Date"), Employee shall not,
     directly or indirectly, whether or not for compensation, and whether or not
     as an employee, be engaged in or have any Financial Interest in any
     business competing with the business of the Company

                                       4
<PAGE>

     (or with any business of any Affiliate for which the Employee performed
     services hereunder) within any region or locality in which the Company or
     such Affiliate is then doing business or marketing its products, as the
     business of the Company or such Affiliates may then be constituted.

          (c)  Non-Solicitation of Employees.  Employee agrees that during
               -----------------------------
     employment and for the period after employment up to and including the
     Non-Competition Termination Date, Employee shall not directly or
     indirectly, solicit for hire any person then employed by Company or
     otherwise encourage any employee to leave the employ of Company, either on
     employee's own behalf or on behalf of another person or entity.

          (d)  Non-Solicitation of Customers.  Employee agrees that during
               -----------------------------
     employment and for the period after employment up to and including the
     Non-Competition Termination Date, Employee will not in any way solicit
     business from any customers of Company within any region or locality in
     which the Company or such Affiliate is then doing business or marketing its
     products. In this clause "business" means business of any kind in which
     Employee was engaged during Employee's employment and "customers" means
     customers of Company that Employee dealt with during Employee's employment
     and prospective customers identified during Employee's employment with the
     Company. Employee acknowledges and agrees that this non-solicitation
     provision is reasonable in scope, is necessary to protect Company's
     goodwill and legitimate business interests, is not harmful to the public
     interest, and will not impose any undue hardship on Employee or affect
     Employee's ability to earn a living or otherwise engage in any chosen
     occupation and career.

          (e)  Confidential Information. Both during and after the Term,
               ------------------------
     Employee shall not, directly or indirectly, divulge, publish, communicate,
     or make available to any person, corporation, governmental agency, or other
     entity (except in performing Employee's duties hereunder or pursuant to a
     government issued subpoena), or use for Employee's own or any other person
     or entity's purposes or benefit, any Company trade secret, confidential
     business information, or other confidential Company information such as:
     designs, specifications, techniques, methods, concepts, inventions,
     developments, discoveries, improvements, or data of the Company which has
     specifically been learned as a result of Employee's employment with the
     Company and which is not generally known to the public (separately and
     collectively, "Confidential Information") (including, but not limited to,
     Confidential Information relating to research, product development or
     design, manufacturing or manufacturing processes, maintenance or repair
     processes, purchasing, product or materials costs, sales or sales
     strategies or prospects, pricing or pricing strategies, advertising or
     promotional programs, product information, or mailing or customer lists,
     finances (including prices, costs, and revenues), and other business
     arrangements, plans, procedures and strategies which Employee would not
     have otherwise learned but for Employee's employment with the Company), and
     shall use Employee's best efforts to prevent the publication or disclosure
     by any other person or entity of any such Confidential Information While
     Employee is employed by the Company, all documents and Confidential
     Information compiled, received, held, or used

                                       5
<PAGE>

     by Employee in connection with the business of the Company shall remain the
     Company's property, and shall be delivered by Employee to the Company upon
     the termination of Employee's employment, for whatever reason, or at any
     earlier time requested by the Company.

                                   ARTICLE V.

     Section 5.01.  Arbitration.
                    -----------

          (a)  Binding Arbitration.  Any dispute or controversy between the
               -------------------
     Company and Employee relating to this Agreement (except any dispute
     relating to Article IV above) or relating to or arising out of Employee's
     employment with the Company, shall be settled by binding arbitration before
     a single arbitrator in Dallas, Texas, pursuant to the Employment Dispute
     Resolution Rules of the American Arbitration Association. Each party shall
     bear its own costs, expenses and fees, including, without limitation,
     attorneys' fees and experts' fees with respect to any such arbitration.
     Judgment upon any resulting arbitration award may be entered in a court of
     competent jurisdiction the Northern District of Texas.

          (b) Judicial Proceedings. The Company shall not be required to
              --------------------                    ---
     arbitrate any dispute arising between it and Employee relating to the
     foregoing Article IV, but shall have the right to institute judicial
     proceedings in a court of competent jurisdiction in the Northern District
     of Texas. Employee hereby consents to, and waives any objection to, the
     personal jurisdiction and venue of the aforesaid courts, and waives any
     claim that the aforesaid courts constitute an inconvenient forum. If such
     judicial proceedings are instituted, the parties agree that such
     proceedings shall not be stayed pending the outcome of any arbitration
     proceedings hereunder.

                                  ARTICLE VI.

     Section 6.01.  Assignment.  This Agreement is binding on and for the
                    ----------
benefit of the Company and Employee and their respective successors, heirs,
executors, administrators, and other legal representatives. Neither this
Agreement nor any right or obligation hereunder may be sold, transferred,
assigned, or pledged by the Company (except to an Affiliate) or by Employee
without the prior written consent of the other. However, nothing in this
Agreement shall preclude the Company from consolidating or merging into or with,
or transferring all or substantially all of its assets to, another entity which
assumes this Agreement and all obligations and undertakings of the Company
hereunder.

     Section 6.02.  No Conflict.  Employee represents and warrants that Employee
                    -----------
is not subject to any agreement, order, judgment or decree of any kind which
would prevent Employee from entering into this Agreement or performing fully
Employee's obligations hereunder.

     Section 6.03.  Additional Obligations.  Both during and after the Term,
                    ----------------------
Employee shall, upon reasonable notice, furnish the Company with such
information as may be in Employee's possession, and cooperate with the Company,
as may reasonably be requested by the Company (and, after the Term, with due
consideration for Employee's obligations with respect to any new

                                       6
<PAGE>

employment or business activity) in connection with any litigation in which the
Company or any Affiliate is or may become a party. The Company shall reimburse
Employee for all time lost and reasonable expenses incurred by Employee in
fulfilling Employee's obligations under this Paragraph 2.01(c).

     Section 6.04.  Captions.  The captions, headings, and arrangements used in
                    --------
this Agreement are for convenience only and do not in any way affect, limit, or
amplify the provisions hereof.

     Section 6.05.  Notices.  All notices required or permitted to be given
                    -------
hereunder shall be in writing and shall be deemed delivered when actually
received or, if mailed, whether or not actually received, three days after
deposited in the United States mail, postage prepaid, registered or certified
mail, return receipt requested, addressed to the party to whom notice is being
given at the specified address or at such other address as such party may
designed by notice:

     Company:                          Fresh America
                                       6600 LBJ, Suite 180
                                       Dallas, TX  75240

     Employee:                         _______________________
                                       _______________________
                                       _______________________

     Either party may change the address to which notices are to be sent by
giving notice of such change of address in the manner provided by this
paragraph.

     Section 6.06.  Severability.  If any provision of this Agreement is held to
                    ------------
be illegal, invalid, or unenforceable under present or future laws, such
provision shall be fully severable, and this Agreement shall be construed and
enforced as if such illegal, invalid, or unenforceable provision had never
constituted a part of this Agreement; the remaining provisions of this Agreement
shall remain in full force and effect and shall not be affected by the illegal,
invalid, or unenforceable provision or by its severance from this Agreement.

     Section 6.07.  Entire Agreement; Amendments.  This Agreement (including any
                    ----------------------------
Schedules referenced herein) contains the entire agreement of the parties hereto
with respect to the subject matter hereof and supersedes all prior agreements
and understandings, if any, relating to the subject matter hereof.  This
Agreement may be amended only by an instrument in writing executed by a duly
authorized officer of Company and by Employee.

     Section 6.08.  Counterparts.  This Agreement may be executed in multiple
                     ------------
counterparts, each of which shall constitute an original, and all of which
together shall constitute one and the same agreement.

     Section 6.09.  Governing Law.  This Agreement shall be construed and
                    -------------
enforced according to the laws of the State of Texas.

                                       7
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have executed and delivered this
Agreement as of the date first written above.

                                            FRESH AMERICA CORP.,
                                            A Texas Corporation


                                            By: __________________________
                                            Name:_________________________
                                            Title:________________________



                                            Employee:


                                            ______________________________

                                       8