Hypericum kalmianum (Kalm's St. Johnswort) Forb bark) contain a chemical called

bark) contain a chemical called hydrojuglone that can inhibit respiration of certain species of plants

This is not an exquisitely beautiful flower

Reaching about three feet high and wide

Photo By: Midwest Ground Covers

University of Georgia

Hypericum kalmianum (Kalm's St. Johnswort) Forb bark) contain a chemical calledThis is a low growing compact shrub with brilliant yellow flowers. It prefers moist soils but works in normal soils as well. A perfect native shrub to replace many lower non native shrubs as it maintains a nice shape and smaller size. Sun Exposure Prairie Savanna Soil Conditions Wet Mesic, Mesic, Dry Mesic Height 2 3' Flower Color Yellow Flower Time July Frequently Asked Questions Why Purchase From Natural Communities Native Plants? What Native Plants