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The Plant Guide

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Smooth hydrangea

Hydrangea arborescens

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Hydrangea arborescens 'Annabelle'

Creamy, six-inch flower heads form flattened spheres above heart-shaped leaves from June through frost.

Noteworthy CharacteristicsThe species is good for grouping a few plants in the lawn or in a mixed shrub border. It is native to the southeast U.S.

CarePrefers shade from midday sun. It blooms on current season's wood throughout the summer, and is best pruned to 6 inches high in early spring.

PropagationSow seed in a cold frame in spring; take softwood cuttings in early summer, hardwood cuttings in winter.

ProblemsGray mold, slugs, powdery mildew, rust, ringspot virus, leaf spots.

  • Genus : Hydrangea
  • Zones : 3, 4, 5, 6, 7, 8, 9
  • Plant Height : 3 to 6 feet
  • Plant Width : 3 to 6 feet
  • Bloom Time : Fall, Summer
  • Tolerance : Frost Tolerant
  • Light : Full Sun to Partial Shade
  • Maintenance : Low
  • Moisture : Medium Moisture
  • Growth Rate : Moderate
  • Characteristics : Showy Seed Heads
  • Plant Type : Shrubs
  • Plant Seasonal Interest : Summer Interest
  • Flower Color : White
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