Memorial Rose
Rosa wichuraiana
- Native to:
- China, Japan, Korea, Nansei-shoto, Taiwan
Kurt Stüber [1] (www.kurtstueber.de)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Rosaceae
- Genus:
- Rosa
- Species:
- Rosa wichuraiana
- USDA Symbol:
- ROWI
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Subshrub , Vine
- Height:
- 50 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- jun,jul
- Bloom Colors:
- white
- Ground Cover:
- Yes
- Landscaping Shrub:
- Yes
Keystone Species Ranking
- Caterpillar Keystone:
- ★★★★★ Butterfly & moth species supported by this genus (NWF)
Garden & Ecology Notes
- Wildlife Value:
- birds, bees, butterflies
- Salt Tolerant:
- Yes
- Fragrant:
- Yes
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- native to East Asia, prefers fertile soils
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 60–120 days
- Germination Time:
- 30–180 days
- Notes:
- Rose seeds can be erratic germinators; cold stratification improves germination rates significantly.
The above propagation data sourced from Claude AI
ORGHPS Germination Guide: Requires scarification. Nick or rub between sheets of sandpaper. Requires soaking. Place in warm water until seeds swell, usually 24-48 hours. Discard water and any seeds that remain floating. Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water for approximately 7 days. Discard water. * soak in hot water for 24 hours to scarify; plant at 32°C for 2-3 weeks, then 4°C for 4 months