Udo
Aralia cordata
- Native to:
- China, Japan, Korea, Kuril Is., Nansei-shoto, Russia, Taiwan
Dalgial





Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Araliaceae
- Genus:
- Aralia
- Species:
- Aralia cordata
- USDA Symbol:
- ARCO33
Growth Characteristics
- Height:
- 200 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- Medium
- Bloom Months:
- jul,aug
- Bloom Colors:
- white, greenish-white
Keystone Species Ranking
- Caterpillar Keystone:
- ★★☆☆☆ Butterfly & moth species supported by this genus (NWF)
Garden & Ecology Notes
- Wildlife Value:
- birds, small mammals
- Fall Color:
- yellow
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- good drainage required
- Moisture:
- consistently moist
- Notes:
- prefers organic matter-rich environments
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 60–90 days
- Germination Time:
- 14–60 days
- Notes:
- Seeds benefit from cold stratification. Germination can be erratic; some seeds may require two seasons.
The above propagation data sourced from Claude AI
ORGHPS Germination Guide: Expose to fluctuating outdoor winter temps incl. freezing for 3 months. Increase light/temp in spring.