Goldenrain Tree

Koelreuteria paniculata

Native to:
China, Korea

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Sapindaceae
Genus:
Koelreuteria
Species:
Koelreuteria paniculata
USDA Symbol:
KOPA

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Tree
Height:
1200 cm
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
jun,jul,aug
Bloom Colors:
yellow

Host Plant for Caterpillars

Imperial Moth (Eacles imperialis)

Garden & Ecology Notes

Wildlife Value:
birds
Deer Resistant:
Yes
Salt Tolerant:
Yes
Fall Color:
yellow

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate

Propagation & Germination

Stratification:
Warm then cold/moist stratification (double dormancy) — 90–120 days
Scarification:
Seed coat scarification required before sowing
Germination Time:
14–42 days
Notes:
Seeds benefit from scarification followed by warm then cold stratification. Can also be sown fresh in fall for natural stratification.

The above propagation data sourced from Claude AI

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

Source: Ontario Rock Garden & Hardy Plant Society