Great St. Johnswort
Hypericum ascyron L. - Mangosteen familySize
Mature Height: Up to around 5.0 feet
Planting Distance: 4.0 feet
Plant Type: Forb/herb
Root Depth: 14 inches
Growth Form: Single Crown
Growth Rate: Moderate
Features
Flower Color: Yellow
Conspicuous Flowers: Yes
Bloom Time: Late Summer
Seasonal Growth: Spring and Summer
Evergreen: No
Fall Colors: No
Conditions
Shade Tolerance: Intolerant
Clay Soil Tolerance: Yes
Sandy Soil Tolerance: No
Drought Tolerance: Low
Flood Tolerance: Medium
Fire Tolerance: High
Salt Tolerance: None
Ecosystem Interactions
Pollinators: Native Bees; Bombus; Beetles, Wasps, Flies
Native Range
- USA: Connecticut, Illinois, Indiana, Iowa, Kansas, Maine, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New York, Ohio, Pennsylvania, Vermont, Wisconsin
- CAN: Ontario, Québec
State-level native status is based on data available through Plants of the World Online. Regional Native Status comes from the USDA Plants Database. For more detailed native status information, please refer to BONAP.