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Zones 5-8
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Zones 5-8

Cheerful Giant Azalea

Rhododendron (Knap Hill Hybrid) 'Cheerful Giant'

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Cheerful Giant Azalea

Rhododendron (Knap Hill Hybrid) 'Cheerful Giant'

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Special Features
Zone Map
Attracts Butterflies
Easy Care
Spring Color

Botanical Name

Rhododendron (Knap Hill Hybrid) 'Cheerful Giant'

Outdoor Growing zone

5-8

Mature Height

4-10

Mature Width

4-6

Sun needs

Full Sun, Partial Sun

The Cheerful Giant Azalea is an upright deciduous shrub that grows over 6 feet tall, carrying huge trusses of a dozen flowers each on every branch. The large double flowers are ruffled and frilled, and a powerful golden yellow with apricot backs. This azalea is much more cold-resistant and easier to grow than evergreen azaleas, and it is a wonderful garden shrub for partial shade or full sun in beds or woodland areas.

  • Huge trusses of drop-dead gorgeous ruffled golden flowers
  • Deciduous species easier to grow than evergreen azaleas
  • Becomes a tall bush over 6 feet high
  • Less demanding for acid soil
  • More winter-hardy than evergreen azaleas

Full sun is suitable for the Cheerful Giant Azalea in cool zones, and partial shade in warmer areas. It thrives beneath tall deciduous trees and prefers rich, well-drained acidic soil. It is not drought resistant and should be watered regularly in summer. No pruning or trimming is needed (or desirable) and it is normally free of pests or diseases.

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