Poisonous and Injurious Plants Workshop

Are plants out to get us? Dr. Tim Block, botany director of the Morris Arboretum, will answer that and other questions about the relatively few species that are truly dangerous. Learn which plants can cause poisoning, hallucinations, allergies or other problems, and which onse are just the victims of rumors and exaggerations. $10/members; $13/nonmembers; preregistration with payment required.