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Searcy, Ark. – The traditional camellia belt has been extended farther north since William Ackerman introduced his winter hardy hybrids.

Camellias, long considered unsuited for gardeners living out of the camellia belt, can now be grown as far north as St. Louis.

The winter hardy camellias, mostly hybrids between Camellia oleifera, C. hiemalis and C. sasanqua, are dark evergreen shrubs reaching 6 to 10 feet in height in 10 years. Depending on the cultivar, 3-inch blooms in shades of white, pink and rose appear from late September until the first really hard freeze. Plants are sprawling and open while young but eventually form a respectable presence in the garden.

The U.S. National Arboretum is situated along the eastern border of Washington, D.C., and has a climate much like that of Little Rock. In the 1950s, the arboretum began development of their Asian collection which included an extensive collection of fall and spring blooming camellias.

These beauties thrived until two devastating back-to back winters during 1977 to 1979. Not only did the Chesapeake Bay freeze solid during the 1977-78 winter, but almost all of the 900 plants in the camellia collection were killed outright or froze to the ground.

But amongst the destruction, one plant was completely unscathed - a forlorn, small, white flowered ugly duckling called Camellia oleifera. This species is widely grown in China, but not for its flowers. Instead seeds are harvested, and an oil extracted for cooking and use in cosmetics.

Using this plant and another selection, Dr. William Ackerman named 'Plain Jane,' the cold-tolerant camellia hybrids were developed from over 10,000 hand crosses over the next 15 years. Initial crosses were made between 1979 and 1981 with back crosses made between 1980 and 1984. From these crosses, Ackerman raised 2.500 seedlings which were evaluated in cold areas from Pennsylvania to the mountains of North Carolina.

The fall flowering camellias - often referred to as the Frost Series Camellias - were released in 1992 and have revived interest in camellias in much of USDA zone 6b. Ackerman, who is now retired but breeding camellias, has written a book entitled Beyond the Camellia Belt, which will be released next spring. Eventually, Ackerman named and released 34 fall flowering selections that are winter hardy to at least -10 degrees.

He also released 15 spring flowering hybrids using C. japonica as the glamour parent. The plants are winter hardy to -10 degrees.

If you garden in the traditional camellia belt these winter hardy camellias offer little improvement over existing hybrids. But if you live north of the traditional area - which in Arkansas roughly follows Interstate 40 across the state – they're worth trying.

Plant camellias in a fertile, organic site that can be watered during periods of summer drought. The ideal planting location is an area having morning sun and afternoon shade or filtered shade such as is created by a grove of pines. Too much sun or too much shade reduces bloom numbers. Once established, plants have good drought tolerance.

Happy Holidays and Happy Gardening! The University of Arkansas System, Division of Agriculture is an equal opportunity/equal access/affirmative action institution. For more information you can contact your local county extension service, you can also follow Sherri Sanders on Facebook @UAEX.WhiteCountyAgriculture .


By Sherri Sanders
County Extension Agent - Agriculture
The Cooperative Extension Service
U of A System Division of Agriculture

Media Contact: Sherri Sanders
County Extension Agent - Agriculture
U of A Division of Agriculture
Cooperative Extension Service
2400 Old Searcy Landing Road Searcy AR 72143
(501) 268-5394


The Arkansas Cooperative Extension Service is an equal opportunity/equal access/affirmative action institution. If you require a reasonable accommodation to participate or need materials in another format, please contact your County Extension office (or other appropriate office) as soon as possible. Dial 711 for Arkansas Relay.

The Arkansas Cooperative Extension Service offers its programs to all eligible persons regardless of race, color, sex, gender identity, sexual orientation, national origin, religion, age, disability, marital or veteran status, genetic information, or any other legally protected status, and is an Affirmative Action/Equal Opportunity Employer.