Ashy Hydrangea

Hydrangea cinerea

Native to:
United States

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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