American Bladdernut

Staphylea trifolia

Native to:
Canada, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Staphyleaceae
Genus:
Staphylea
Species:
Staphylea trifolia
USDA Symbol:
STTR

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Tree
Height:
450 cm
Light Requirements:
Shade
Drought Tolerance:
Low
Bloom Months:
apr,may,jun
Bloom Colors:
white, cream
Landscaping Shrub:
Yes

Wildlife Benefits

Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Host Plant for Caterpillars

Fall webworm (Hyphantria cunea), White-marked Tussock Moth (Orgyia leucostigma)

Reported Fauna Sightings

Bees: Common eastern (Bombus impatiens)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals
Deer Resistant:
Yes
Fall Color:
yellow

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
prefers forested areas with organic matter

Propagation & Germination

Stratification:
Warm then cold/moist stratification (double dormancy) — 150–240 days
Germination Time:
30–365 days
Notes:
Double dormancy requiring warm stratification followed by cold stratification. Germination may take up to two years; often exhibits erratic emergence.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.

Source: Claude AI

ORGHPS Germination Guide: Expose to fluctuating outdoor winter temps incl. freezing for 3 months. Increase light/temp in spring.

Source: Ontario Rock Garden & Hardy Plant Society