Pennsbury Land Trust is sponsoring a seminar “Gems and Thugs” on Thursday, May 19 from 6:30 to 8:30 p.m. in the township building at 702 Baltimore Pike. Karen Travers will facilitate the event and talk about native plants (Gems) and the non-native ones (Thugs) and how to reduce the negative effects on our landscape. There will be a walk in the township park to see some of these plants in the wild. Wear sturdy walking shoes. Call the township building to register at 610-388-7323. The cost is $5 at the door, but free to Pennsbury Land Trust members.