Beautiful St. John’s Wort Plants
St. John’s wort plants are pretty little shrubs with cheery yellow flowers that have a burst of long, showy stamen in the center. Grow St. John’s wort plants in full sun or partial shade and in moist, well-drained soil of any kind except very alkaline or salty. Space plants 24 to 36 inches apart, and water regularly so that the soil is constantly moist but not sodden. Remove St. John’s wort flowers with pruning shears as they fade and berries before they ripen to prevent seeds forming. Disinfect pruning shears with household disinfectant before and after use. Alternatively, control the St. John’s wort’s spread by removing seedlings as they appear. Dig seedlings out with a trowel or hoe shallowly around plants, taking care not to disturb plant roots.
Prune St. John’s wort plants in early spring with disinfected pruning shears, removing dead, damaged or crossing stems. Prune the plant to the desired shape and to control its size. Disinfect pruning shears again after use. Established St. John’s wort tolerates some drought, and the plant has no serious disease or pest problems. In hot climates, St. John’s wort grows best where it receives afternoon shade. Pruning St. John’s wort after early spring prevents the plant from flowering that year.