Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Hypericaceae

Genus:

Hypericum

Species:

Hypericum grandifolium

USDA Symbol:

HYGR6

Growth Characteristics

Height:

150 cm

Light Requirements:

Full Sun

Drought Tolerance:

Medium

Bloom Months:

jun,jul,aug,sep

Bloom Colors:

yellow

Landscaping Shrub:

Yes

Keystone Species Ranking

Caterpillar Keystone:

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

Garden & Ecology Notes

Wildlife Value:

bees, butterflies

Deer Resistant:

Yes

Fire Ecology:

Fire adapted — tolerates or benefits from fire

Fire Notes:

Resprouts from rootstock following fire; common in fire-prone laurel forest margins.

Soil Requirements

Soil Type:

moist, well-drained volcanic soil

pH:

5.5 - 7.0 (slightly acidic to neutral)

Drainage:

excellent drainage required

Moisture:

consistently moist

Notes:

native to volcanic regions with high rainfall

Propagation & Germination

Stratification:

Cold/moist stratification required — 30–90 days

Germination Time:

14–60 days

Notes:

Seeds require light for germination; surface sow and do not cover.

The above propagation data sourced from Claude AI