Virginia Marsh St. Johnswort

Hypericum virginicum

Native to:
Canada, United States
Virginia Marsh St. Johnswort

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Hypericaceae
Genus:
Hypericum
Species:
Hypericum virginicum
USDA Symbol:
TRVI2

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
60 cm
Drought Tolerance:
Low
Bloom Months:
jul,aug,sep
Bloom Colors:
pink, purple

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)

Keystone Species Ranking

Caterpillar Keystone:
★★★☆☆ Butterfly & moth species supported by this genus (NWF)

Host Plant for Caterpillars

Agonopterix hyperella, Agonopterix lythrella, Ancylis maritima, gray half-spot (Nedra ramosula)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies
Deer Resistant:
Yes

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–30 days
Notes:
Seeds are tiny and require light for germination; surface sow and keep moist.

The above propagation data sourced from Claude AI