Ashy Hydrangea Hydrangea cinerea
Other Common Name(s):
Previously known as:
- Hydrangea arborescens subsp. discolor
- Hydrangea ashei
- Phonetic Spelling
- hy-DRAN-jee-ah sin-eh-REE-ah
- Description
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Ashy hydrangea is a native deciduous shrub in the hydrangea (Hydrangeaceae) family found in rocky forests, along riparian areas and in shaded ravines. In North Carolina, it is found in the southwestern region making it fairly rare in the wild. The common name ashy hydrangea comes from the abundance of gray hairs found on the undersides of the leaves.
Plant it in full sun to partial or dappled shade in moist to occasionally dry, well-drained soils. This small shrub will grow to a mature height of 6 feet and width of 3 feet. Once established, this shrub is tolerant of drought and some heat. However, in hotter summer climates, the plant will likely require supplemental water to help it tolerate sun without being damaged.
Unlike other hydrangeas, the color of the flower remains white regardless of the pH of the soil in which it is planted. The Cherokee have used infusions of the bark and roots as emetics and later by the early settlers for bladder and kidney stones.
Can be cultivated for ornamental use. In its native habitat, it can be found along roadsides and under forests.
Insects, Diseases, and Other Plant Problems: Few serious problems.
- See this plant in the following landscape :
- Cultivars / Varieties:
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- Cultivars / Varieties:
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Attributes:
- Genus:
- Hydrangea
- Species:
- cinerea
- Family:
- Hydrangeaceae
- Uses (Ethnobotany):
- Members of the Cherokee Nation used this plant medically for liver and gynecological problems as well as to either induce (emetic) or stop vomiting (antiemetic) and nausea.
- Life Cycle:
- Woody
- Recommended Propagation Strategy:
- Stem Cutting
- Country Or Region Of Origin:
- Central and southeastern U.S.A.
- Distribution:
- AR , GA , IL , IN , KY , MA , NC , OK , SC , TN , WV
- Dimensions:
- Height: 2 ft. 0 in. - 6 ft. 0 in.
- Width: 1 ft. 0 in. - 3 ft. 0 in.
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Whole Plant Traits:
- Plant Type:
- Native Plant
- Shrub
- Woody Plant Leaf Characteristics:
- Deciduous
- Habit/Form:
- Erect
- Growth Rate:
- Medium
- Maintenance:
- Low
- Texture:
- Fine
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Cultural Conditions:
- Light:
- Dappled Sunlight (Shade through upper canopy all day)
- Full sun (6 or more hours of direct sunlight a day)
- Partial Shade (Direct sunlight only part of the day, 2-6 hours)
- Soil Texture:
- Clay
- Loam (Silt)
- Sand
- Shallow Rocky
- Soil pH:
- Alkaline (>8.0)
- Neutral (6.0-8.0)
- Soil Drainage:
- Good Drainage
- Moist
- Occasionally Dry
- Available Space To Plant:
- 12 inches-3 feet
- 3 feet-6 feet
- USDA Plant Hardiness Zone:
- 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
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Fruit:
- Display/Harvest Time:
- Spring
- Summer
- Fruit Type:
- Capsule
- Fruit Description:
- Dry capsule fruits appear in May and June are dehiscent (split open) when ripe.
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Flowers:
- Flower Color:
- White
- Flower Inflorescence:
- Corymb
- Flower Value To Gardener:
- Showy
- Flower Bloom Time:
- Spring
- Summer
- Flower Shape:
- Cross
- Flower Petals:
- 4-5 petals/rays
- Colored Sepals
- Flower Size:
- < 1 inch
- Flower Description:
- Showy white clusters with two types of flowers appear on branch tips. Tiny fertile ones in the center surrounded by an outer ring of flowers with 4 white sepals in a cross pattern reaching 1/2-1 inch across. The petaled flowers serve to attract pollinators to the center fertile flowers. Flowers appear from late spring to late summer.
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Leaves:
- Woody Plant Leaf Characteristics:
- Deciduous
- Leaf Color:
- Green
- Leaf Type:
- Simple
- Leaf Arrangement:
- Opposite
- Leaf Shape:
- Elliptical
- Ovate
- Leaf Margin:
- Dentate
- Serrate
- Hairs Present:
- Yes
- Leaf Description:
- Opposite large simple green ovate to elliptic-ovate with a narrow tip. Leaves have a toothed margins, gray hairs on the undersides, and pinnate venation.
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Stem:
- Stem Color:
- Brown/Copper
- Orange
- Red/Burgundy
- Stem Is Aromatic:
- No
- Stem Bud Scales:
- Enclosed in more than 2 scales
- Stem Surface:
- Hairy (pubescent)
- Stem Description:
- Smooth thin bark in brown to orange-red. Three bud scales overlap in a shingle pattern. Twigs are sparsely hairy.
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Landscape:
- Landscape Location:
- Naturalized Area
- Riparian
- Landscape Theme:
- Drought Tolerant Garden
- Native Garden
- Resistance To Challenges:
- Drought
- Heat
