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Characteristics

Conservation Plant Characteristics

Hypericum ascyron L.
great St. Johnswort
HYAS80

Summary
Duration PR Federal T/E Status
Growth Habit FB   National Wetland Indicator
Native Status L48 (N), CAN (N)      
 
Morphology/Physiology
Active Growth Period Spring and Summer   Fruit/Seed Conspicuous No
After Harvest Regrowth Rate Slow   Growth Form Single Crown
Bloat None   Growth Rate Moderate
C:N Ratio Medium   Height at Base Age, Maximum
Coppice Potential No   Height at Maturity 5.0
Fall Conspicuous No   Known Allelopath No
Fire Resistant No   Leaf Retention No
Flower Color Yellow   Lifespan Long
Flower Conspicuous Yes   Low Growing Grass No
Foliage Color Green   Nitrogen Fixation None
Foliage Porosity Summer Moderate   Resprout Ability No
Foliage Porosity Winter Porous   Shape and Orientation Erect
Foliage Texture Coarse   Toxicity None
Fruit/Seed Color Brown      
 
Growth Requirements
Adapted To Coarse Textured Soils No   Moisture Use Medium
Adapted To Medium Textured Soils Yes   pH, Minimum 5.7
Adapted To Fine Textured Soils Yes   pH, Maximum 7.1
Anaerobic Tolerance Medium   Planting Density Per Acre, Minimum 1700
CaCO3 Tolerance Low   Planting Density Per Acre, Maximum 2700
Cold Stratification Required Yes   Precipitation, Minimum 32
Drought Tolerance Low   Precipitation, Maximum 55
Fertility Requirement Medium   Root Depth, Minimum 14
Fire Tolerance High   Salinity Tolerance None
Frost Free Days, Minimum 80   Shade Tolerance Intolerant
Hedge Tolerance None   Temperature, Minimum (°F) -23
 
Reproduction
Bloom Period Late Summer   Propagated By Cuttings No
Commercial Availability No Known Source   Propagated By Seed No
Fruit/Seed Abundance Medium   Propagated By Sod No
Fruit/Seed Period Begin Summer   Propagated By Sprigs Yes
Fruit/Seed Period End Fall   Propagated By Tubers No
Fruit/Seed Persistence No   Seed Per Pound 1800000
Propagated By Bare Root No   Seed Spread Rate Slow
Propagated By Bulbs No   Seedling Vigor Medium
Propagated By Container No   Small Grain No
Propagated By Corms No   Vegetative Spread Rate None
 
Suitibility/Use
Berry/Nut/Seed Product No   Palatable Browse Animal Low
Christmas Tree Product No   Palatable Graze Animal Low
Fodder Product No   Palatable Human No
Fuelwood Product   Post Product No
Lumber Product No   Protein Potential Low
Naval Store Product No   Pulpwood Product No
Nursery Stock Product Yes   Veneer Product No
 
 
Time Generated: 07/15/2019 06:09 PM CDT