Hydrangea arborescens ‘Grandiflora' (Hills-of-snow hydrangea, Smooth hydrangea)

Hydrangea arborescens ‘Grandiflora' Photo/Illustration: Courtesy of Bailey Nurseries



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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11
Botanical Name: Hydrangea arborescens ‘Grandiflora' hy-DRAIN-jah ar-bor-RES-senz Common Name: Hills-of-snow hydrangea, Smooth hydrangea Synonyms: 'Hills-of-Snow' Hydrangea Genus: Hydrangea
Hydrangea arborescens is a southeastern U.S. native shrub with a rounded habit to 5 feet tall and domes of creamy white flowers over a long period beginning in early summer. The cultivar 'Grandiflora' has larger, showier flowerheads than the species. They grow to 6 to 8 inches across.  
Care: Smooth hydrangea is good for grouping a few plants in the lawn or in a mixed shrub border, and prefers shade from midday sun. It blooms on current season's wood throughout the summer, and is best pruned to 6" high in early spring.
Propagation: Sow seed in a cold frame in spring; take softwood cuttings in early summer, hardwood cuttings in winter.
Problems: Gray mold, slugs, powdery mildew, rust, ringspot virus, leaf spots.
Height 3 ft. to 6 ft.
Spread 3 ft. to 6 ft.
Growth Habit Spreads
Growth Pace Moderate Grower
Light Full Sun to Part Shade
Moisture Medium Moisture
Maintenance Low
Tolerance Frost Tolerant
Characteristics Native; Showy Flowers; Showy Seed Heads
Bloom Time Summer
Flower Color White Flower
Uses Beds and Borders, Cut Flower, Dried Flower, Screening
Style Cottage Garden, Woodland Garden
Seasonal Interest Summer Interest, Fall Interest
Type Shrubs

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