On Sep 6, 2004, Toxicodendron from Piedmont, MO (Zone 6a) wrote:
This is a Missouri native woodland plant. It forms large colonies by underground runners. The plants exist as basal rosettes of leaves (up to 18 inches long) for years. Then a dramatic bloom spire appears, as tall as 8 feet, with greenish flowers. After that, the plant dies. It needs dappled shade and appreciates regular moisture.
This plant has been said to grow in the following regions: