Rough-leaved Hydrangea, Velvet-leaf Hydrangea
Kingdom: Plantae, Division: Angiosperms, Class: Eudicots, Order: Cornales, Family: Hydrangeaceae, Genus: Hydrangea, Species: Hydrangea aspera · Hydrangeaceae (Hydrangea family) · Simple, Deciduous
Species
Hydrangea aspera (likely ssp. sargentiana)
Leaf Type
Simple, Deciduous
Family
Hydrangeaceae (Hydrangea family)
Shape
Ovate to broadly lanceolate with a pointed apex and rounded base
Size
Large and robust, typically 6-10 inches long and 3-5 inches wide; significantly larger than common garden hydrangeas.
Margin
Finely serrate to dentate (toothed along the edges)
Arrangement
Opposite (growing in pairs along the stems)
Rarity
Common as an ornamental in botanical gardens and specialty nurseries, but uncommon in standard residential landscaping.
Color & Pattern
Dull medium-green upper surface with a lighter, pale green underside; the midrib and petioles often exhibit a reddish-purple or burgundy tint due to dense pubescence.
Venation Pattern
Pinnate and prominent; the veins are deeply impressed on the upper surface, creating a rugose or quilted look.
Texture & Surface
Distinctively velvety or bristly-hairy (pubescent) on both sides; the stems are notably shaggy or peeling.
Description
A large, upright, deciduous shrub that can reach 10-12 feet. It features peeling bark on older stems and massive, fuzzy leaves. In summer, it produces lacecap flower clusters with small purple-blue fertile inner flowers surrounded by larger rose-pink or white sterile sepals.
Key Features
The most diagnostic features are the extremely soft, velvet-like hairs covering the leaves and the bristly, almost 'shaggy' texture of the young stems and petioles.
Habitat
Damp woodland margins, mountain valleys, and mixed forests; prefers partial shade and moist, well-draining, humus-rich soil.
Geographic Range
Native to East Asia (Himalayas to China); common in temperate gardens in Europe and North America as an ornamental.
Condition Notes
The leaf appears mostly healthy with good turgidity, though some slight yellowing (chlorosis) and small brown necrotic spots on surrounding leaves suggest a minor nutrient deficiency or seasonal aging.
Interesting Facts
Unlike 'Macrophylla' hydrangeas, the flower color of H. aspera is much less dependent on soil pH. The subspecies sargentiana is famous for having leaves so large they are often compared to elephant ears.
Medicinal & Uses
Primarily used as a high-impact ornamental shrub in woodland gardens. Some hydrangea species have been used in traditional Chinese medicine, but H. aspera is not commonly utilized for these purposes.
Ecological Role
Provides nectar for pollinators like bees and hoverflies during the summer; the dense foliage offers shelter for small birds and insects.
Similar Species
Hydrangea macrophylla (smoother, glossier leaves), Hydrangea quercifolia (lobed leaves), and Hydrangea sargentiana (even hairier, larger leaves, often considered a subspecies of aspera).
Foraging Tips
Look for its massive, felt-like leaves in shaded corners of botanical gardens. It is not generally foraged for food and is grown strictly for its architectural beauty.
Toxicity Warning
Moderately Toxic. Like all hydrangeas, it contains cyanogenic glycosides. Ingestion of leaves or buds can cause nausea, vomiting, and diarrhea in humans and pets.