Northern St. Johnswort

Hypericum boreale

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Hypericaceae
Genus:
Hypericum
Species:
Hypericum boreale

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
1-2 ft
Light Requirements:
Part Shade
Drought Tolerance:
High
Bloom Months:
jun, jul, aug
Bloom Colors:
Yellow

Native Range

United States: Connecticut, Delaware, Iowa, Illinois, Indiana, Massachusetts, Maine, Michigan, Minnesota, North Carolina, New Hampshire, New Jersey, New York, Ohio, Oregon, Pennsylvania, Rhode Island, Virginia, Vermont, Washington, Wisconsin, West Virginia, Canada: British Columbia, Manitoba, New Brunswick, Nova Scotia, Ontario, Prince Edward Island, Quebec

Keystone Species Ranking

Caterpillar Keystone:
★★★☆☆ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)

Host Plant for Caterpillars

gray half-spot (Nedra ramosula)

Soil Requirements

Soil Type:
wet, nutrient-poor, sandy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
commonly found in bogs and wet meadows