RED ELDERBERRY – Part of the honeysuckle family, red elderberry produces masses of flowers on arching stems on plants as much as 20 feet high and are a favorite of hummingbirds and butterflies. Giant clusters of red berries appear in late summer and are a valuable food source for birds, but the entire plant is poisonous to humans. The berries are toxic if eaten raw, but were commonly used in cooking by various Native American tribes.