New publication available for spring plant sale donors, buyers Share ORONO — With gardeners planning for spring planting and local plant sales, a new publication from University of Maine Cooperative Extension offers guidance for plant sale donors, buyers and organizers. “Best Practices for Plant Sale Donors and Buyers in Maine” provides recommendations for preparing plants for group sales, how to be sure donations and purchases follow state guidelines on invasive plants and pests, and how to find spring plant sales with an online database and map maintained by UMaine Extension. Other UM...