Hydrangea arborescens Annabelle
Common Name(s):
Smooth hydrangea
Wild hydrangea
Synonym:
Sevenbark
Flower:
White
Blooms :
May
to:
Sep
Tiny white flowers in head-like clusters 8-10" across
Botanical Description
Fragrant?
NO
Family:
Hydrangeaceae
Med - Lg Shrub (usually >3' and never < 1.5')
Foliage:
Green
Leaves opposite, oval, egg-shaped rounded, toothed
Fall Color?
YES
Leaves turn yellow in fall
Deciduous
Photo by:
Heading 6
Oregon Native?
NO
West State Native?
NO
Origins:
New York west to Iowa and south to Louisiana
Site Selection
Minimum USDA Hardiness Zone:
3
Water Needs:
M
Sun Needs:
Full Sun
Deer Resistant?
YES
Firewise?
YES
Height:
3-5'
Spread:
4-6'
Growth Rate:
Medium
Native Habitat:
Moist rocky woodlands, skopes, ravines, streambanks
Soil:
Average moist well-drained
Care Recommendations
Maintenance Level:
Low
Fertilizer:
Apply early spring, compost, fish emulsion, rose food work well
Mulch:
2-3" of compost, or organis mulch around base in fall for winter protection
Consistent moisture, correct lighting (morning sun/afternoon shade), annual pruning to 12-18" or near ground, support cages if needed
Long Term:
Winter:
None if fall chores provide protection from winter cold
Spring:
Prune dead or damged stems, apply mulch, provide water, can cut back as much as one third just before leaf emergence
Summer:
Ensure mulch has been spread, fertilize lightly, check for pests
Fall:
Prepare for dormancy by applying mulch to protect roots
General Care Comments:
Regular watering, mulching for moisture retention, balanced fertilizer in spring, managing for pests
Common Problems
Flopping habit, high water dependency, heat stress
Diseases:
Powdery mildew, leaf spots, grey mold,
Insects:
Aphids, spider mites. scale. hydrangea leaftier moth
Environmental Problems:
Sterile flowers that lack pollen and nectar
Pests:
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