Ashy Hydrangea
Hydrangea cinerea
- Native to:
- United States
iNaturalist: © wildlander (iNaturalist #207868347)






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Hydrangeaceae
- Genus:
- Hydrangea
- Species:
- Hydrangea cinerea
- USDA Symbol:
- HYCI3
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Shrub
- Height:
- 300 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- Medium
- Bloom Months:
- jun,jul,aug
- Bloom Colors:
- white, cream
- Landscaping Shrub:
- Yes
Wildlife Benefits
- Butterflies & Moths:
- ★★☆☆☆ Documented Lepidoptera association (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Keystone Species Ranking
- Caterpillar Keystone:
- ★★☆☆☆ Butterfly & moth species supported by this genus (NWF)
Host Plant for Caterpillars
Hydrangea sphinx (Darapsa versicolor)
Garden & Ecology Notes
- Wildlife Value:
- birds, butterflies
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 5.5 - 6.5 (slightly acidic)
- Drainage:
- good drainage required
- Moisture:
- consistently moist
- Notes:
- prefers shaded or semi-shaded areas
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds benefit from cold stratification for 30-60 days to break dormancy.
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).
Source: Claude AI