Goldenrain Tree
Koelreuteria paniculata
- Native to:
- China, Korea
Didier Descouens





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.