As if you needed yet another reason to join The Native Plant Trust, the upcoming Members’ Plant Exchange on September 15 may be the impetus you need. The rain or shine event at Garden in the Woods, 180 Hemenway Road in Framingham, brings members together, each bringing at least one potted and identified plant to swap with other members. Native species are encouraged but not essential. However, no invasives! Anyone toting in a pot of Japanese bittersweet will be publicly shamed and pilloried. Start time and details will be sent after registration, and to register, you must be a member. To join, visit http://nativeplanttrust.org. To register, call 508-877-7630, x 3801, or email specialevents@nativeplanttrust.org.