Hydrangea arborescens 'Annabelle' (Smooth Hydrangea)

Scientific Name

Hydrangea arborescens 'Annabelle'

Common Names

Smooth Hydrangea


Hydrangea acuta, Hydrangea amplifolia, Hydrangea arborescens var. arborescens, Hydrangea arborescens f. arborescens, Hydrangea arborescens subsp. arborescens

Scientific Classification

Family: Hydrangeaceae
Genus: Hydrangea


Color: White
Bloom Time: Summer


Hydrangea arborescens 'Annabelle' is a smooth cultivar which features much larger flowers than the species. It is a deciduous shrub with a rounded habit that typically grows up to 5 feet (1.5 m) tall. Clusters of sterile, white flowers appear in huge, symmetrical, rounded heads, usually growing about 12 inches (30 cm) in diameter. Blooms in June for up to two months, sometimes with a small repeat bloom in the fall. Dark green, serrated leaves are up to 8 inches (20 cm) long.

Hydrangea arborescens 'Annabelle' - Smooth Hydrangea
Photo via esfloraonline.com


USDA hardiness zone 3a to 9b: from −40 °F (−40 °C) to 30 °F (−1.1 °C).

How to Grow and Care

Hydrangeas prefer a sunny or semi-shaded position, in a cool area of the garden with shelter from cold, drying winds. For this reason, they are especially useful for brightening up shaded borders and make an attractive feature in the dappled shade of woodland gardens. Try to avoid hot, sunny areas and east-facing spots where colds winds can damage the spring growth.

Grow Hydrangea plants in any rich fertile, moist soil. It's a good idea to work in some well-rotted manure or compost before planting Hydrangeas, and they will always appreciate a mulch of organic matter in spring to help conserve moisture at their roots and feed them up for them for the coming growing season. On light soils, it is a good idea to feed Hydrangeas with an ericaceous fertilizer. See more at How to Grow and Care for Hydrangeas.


Garden origin.


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