Long-Scape Iris
Iris delavayi
- Native to:
- China
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Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Iridaceae
- Genus:
- Iris
- Species:
- Iris delavayi
- USDA Symbol:
- IRDE2
Growth Characteristics
- Height:
- 150 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul
- Bloom Colors:
- purple, blue, violet, white
Keystone Species Ranking
- Caterpillar Keystone:
- ★★☆☆☆ Butterfly & moth species supported by this genus (NWF)
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies
- Deer Resistant:
- Yes
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 wetland or marshy areas
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 60–90 days
- Germination Time:
- 30–180 days
- Notes:
- Germination can be slow and erratic. Fresh seed germinates best; cold stratification improves rates.
The above propagation data sourced from Claude AI
ORGHPS Germination Guide: Sow at 4°C for 3 months, then place @ 20°C for 3 months. * soak and rinse in clean water daily x 4 weeks