333-008-0570 Designation of Plants at Grow Site Address (1) A person responsible for a marijuana grow site (PRMG) producing marijuana at a grow site where multiple PRMGs are registered must: (a) Physically identify the marijuana plants at a grow site that are being grown by that PRMG by either: (A) Tagging each marijuana plant with the PRMG’s name, identification card number and patient identification number; or (B) Fencing or cordoning off the PRMG’s marijuana plants and posting all grow site registration cards at the location where the plants are located; or (b) Post a plot plan or graphic matrix depicting the plant layout configuration within the grow site and the PRMG and patient associated with each plant. For purposes of such grow site mapping, a keyed or alphanumeric legend must be included that includes means to confirm the assigned PRMG name and identification number and the patient name and identification number for each plant. (2) If during an investigation the Oregon Health Authority (Authority) determines that marijuana plants have not been designated by a PRMG in accordance with section (1) of this rule or there are marijuana plants at the grow site designated by an individual who is not authorized to produce marijuana at that grow site the Authority may suspend or revoke the registration of the grow site for all PRMGs at that grow site and all the PRMG’s identification cards. (3) If during an investigation the Authority determines that a PRMG is producing marijuana plants in excess of the number of plants allowed in ORS 475C.806 the Authority may suspend or revoke the registration of the PRMG for each patient who has designated the PRMG. (4) Each PRMG registered at a grow site is jointly and severally responsible for ensuring compliance with ORS 475C.806. (5) A PRMG who is producing marijuana at a grow site that is also licensed by the Oregon Department of Agriculture to produce hemp must: (a) Provide a copy of the control plan required under OAR 603-048-0520 to an inspector of the Authority when requested; (b) Ensure that plants grown pursuant to the industrial hemp license are grown only in licensed hemp production areas and plants grown pursuant to a medical marijuana grower registration are grown only in medical marijuana plots; (c) Post a grow site plan that identifies the location of the hemp production areas and medical marijuana plots; and (d) Visually demarcate the boundaries of hemp production areas and medical marijuana plots through signs, fencing, or cordoning. (6) A PRMG that stores cannabis grown pursuant to a medical marijuana grower registration or under ORS 475C.305 must ensure that the harvested cannabis is segregated from its harvested industrial hemp. The PRMG must: (a) Comply with the storage requirements in OAR 603-048-0540; and (b) Label all cannabis harvested from plants grown pursuant to a medical marijuana grower registration or under ORS 475C.305 with the following: (A) Identification as to whether the cannabis was grown pursuant to a medical marijuana grower registration or as cannabis from a “personal grow” under ORS 475C.305; and (B) The date the cannabis was harvested. Statutory/Other Authority: ORS 475C.806 & 475C.919 Statutes/Other Implemented: ORS 475C.806 History: PH 27-2025, amend filed 12/30/2025, effective 01/01/2026 PH 79-2022, minor correction filed 05/25/2022, effective 05/25/2022 PH 22-2019, amend filed 11/15/2019, effective 01/01/2020 PH 132-2018, minor correction filed 04/27/2018, effective 04/27/2018 PH 9-2017, f. 5-26-17, cert. ef. 5-31-17 PH 21-2016, f. 6-24-16, cert. ef. 6-28-16 PH 9-2016, f. 2-26-16, cert. ef. 3-1-16