Several native plants are poisonous to people and animals, so use caution when planting. They include: ● Butterfly milkweed (toxic to horses and domestic animals) ● Blue false indigo ● Boxelder (toxic to horses; can cause allergic reactions in humans) ● Pawpaw (leaves) ● Ohio buckeye (nuts, bark, and leaves are toxic to people and animals) Note: When raw, black elderberry and chokeberry are inedible due to their highly unpleasant taste. Enjoy them when processed as ingredients in jellies, wines, or other foods.