Hamilton's Spindletree

Euonymus hamiltonianus

Native to:
Afghanistan, China, India, Japan, Korea, Kuril Is., Myanmar, Nepal, Pakistan, Russia, Thailand

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Celastraceae
Genus:
Euonymus
Species:
Euonymus hamiltonianus
USDA Symbol:
EUHA7

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Tree
Height:
800 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
may,jun
Bloom Colors:
green, yellow
Landscaping Shrub:
Yes

Wildlife Benefits

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

Host Plant for Caterpillars

Cecropia moth (Hyalophora cecropia)

Garden & Ecology Notes

Wildlife Value:
birds
Fall Color:
yellow, pink, red

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
prefers fertile soils with organic matter

Propagation & Germination

Stratification:
Warm then cold/moist stratification (double dormancy) — 90–180 days
Germination Time:
30–180 days
Notes:
Seeds exhibit double dormancy requiring warm stratification followed by cold stratification. Germination can be erratic over two seasons.

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Repeated cycles of 4C then 20C, 3 months each. Very prolonged.

Source: Ontario Rock Garden & Hardy Plant Society