Since mid-August, an advisory group consisting of myself, OSU Extension faculty (Brooke Edmunds), OSU MG volunteers (Linda Coakley and Ruth Estrada), and ODA Invasive Pest Professionals (Beth Myers-Shenai and Chris Hedstrom) have been working on developing guidance for best management practices for MG plant sales. This effort emerged as a result of increased awareness of how plant sales and plant swaps might serve as venues for invasive pest introduction or spread. Given the focus of the Master Gardener Program, we wanted to work together to do our part to stem the introduction spread of invasives, while delivering high quality plants to MG Plant sale customers.
THIS DOCUMENT is what our group has developed. As questions related to this document arise, I will start developing an associated FAQ list. Please let me emphasize, however, that the intention is not to police plant sales, but to provide guidance on how we can all work together to truly practice sustainable gardening.
FAQs (new questions and answers will be added, as soon as possible)
Q: How quickly must Master Gardeners adopt the best management practices?
A: Of the three recommendations, only the first (‘Apply for and receive a temporary nursery license from the Oregon Department of Agriculture’) is a legal requirement to host a short-term plant sale in Oregon. That recommendation must be adhered to, immediately (and should have been adhered to, in the past).
The other two recommendations (‘Only sell plants that are free from pests’; ‘Only sell plants that are properly identified, cross-checked against state and local noxious wee lists, and tagged’) should be adopted as soon as is practical for 2019 plant sales, but should become standard practice for plant sales in 2020, and beyond. For example, if a large part of your 2019 plant sale inventory consists of donated plants dug from home gardens, or another similar source, you are not expected to dispose of those plants. But, for plant sales in 2020 and beyond, Master Gardener groups should be proactively planning for a different approach to procuring plant materials for sale.
Q: How will these best management practices be enforced?
A: It is not my intention to act as the plant sale police. If I hear of reports of Master Gardener groups using practices that contradict the plant sale best management practices, I will reach out to the key organizers in an effort to raise awareness of the issue, and to strategize on how to remedy the situation.
Q: Can we take stem cuttings from plants grown in garden soil, if the plant is healthy and pest-free?
A: Yes. As long as a cutting is from the above-ground portion of a healthy plant (inspected to be disease and pest free), then risk of invasive pest introduction and spread is minimized. Movement of soil poses the greatest risk, and thus root cuttings should not be taken.