Bruso, George H.
Hypericum prolificum L.
Shrubby St. Johnswort
Clusiaceae (St. John's-Wort Family)
Shrubby St. Johnís-wort is a very small, mound-shaped, deciduous shrub,
to 3 ft. tall, with dense, upright branching and exfoliating, red to purple bark. Smooth, dark- to blue-green, fine-textured foliage becomes yellow-green in fall. Large, yellow flowers occur singly or in few-flowered clusters. A dry, dehiscent, three-valved capsule
persists all winter.
adapts to a variety of moisture regimes and is even flood tolerant. It has no serious disease or insect problems. This species is pH adaptable but does extremely well in calcareous sites.
Image Gallery: 8 photo(s) available
Plant CharacteristicsDuration: Perennial Habit: Shrub Leaf:
Green Fruit: Size Class:
Bloom InformationBloom Color: Yellow
Bloom Time: Jun , Jul , Aug
AL , AR , CT , DE , FL , GA , IL , IN , IA , KY , LA , ME , MD , MA , MI , MN , MS , MO , NJ , NY , NC , OH , OK , PA , RI , SC , TN , TX , VT , VA , WV , WI , DC Canada: ON
, QC Native Distribution:
NY to s. MI & IA, s. to GA, LA & OK Native Habitat:
Sandy, open woods; meadows; seepage slopes USDA Native Status: L48(N), CAN(N)
Growing ConditionsWater Use: High
Light Requirement: Part Shade , Shade
Soil Moisture: Moist , Dry
Soil pH: Circumneutral (pH 6.8-7.2)
CaCO3 Tolerance: Low
Soil Description: Dry, rocky soils.
BenefitUse Wildlife: Intermediate.
Conspicuous Flowers: yes