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Summer Sweet
(Clethra Alnifolia)

Most Arkansas gardens are made habitable in the summer months by shade trees, but finding shrubs that grow well in the shade can be a challenge. Summer Sweet, a native shrub in the Gulf-coastal region of the southeastern states, has become a favorite in recent years as gardeners seek out plants with multiple seasons of interest. The erect, usually white, highly fragrant blooms appear in July and add a much needed lift to the summer garden. Summer Sweet, especially compact growing forms such as ‘Hummingbird’ or ‘Sixteen Candles’ have beautiful, deep green foliage that turns a pleasant yellow in the fall before the foliage drops. ‘Ruby Spice’ is the most common of the pink-flowered selections. More than a dozen selections have been made of this plant that is sure to become more common in gardens as its merits become better recognized. It should be used near walks, pathways or patios where its sweet summer fragrance can be enjoyed.

  • Height: 6 to 8 feet. Spread: 4 to 5 feet.
  • Exposure: Medium to light shade best but grows in full sun too.
  • Hardiness: Hardy statewide, otherwise zones 4 to 9.
  • Planting Season: Year-round from container grown plants.
  • Culture: Easy to grow in semi-shade or full sun. In nature it is found in the moist woodland as an understory plant, so keeping it watered in the summer will help ensure good bloom display. If happy, it will spread by underground suckers.

Picture closeup of Summer Sweet flowers showing erect pinkish-white flower blooms.

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Division of Agriculture
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Last Date Modified 08/19/2010
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University of Arkansas • Division of Agriculture
Cooperative Extension Service
2301 South University Avenue
Little Rock, Arkansas 72204 • USA
Phone (501) 671-2000 • Fax (501) 671-2209
 

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