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This plant is said to grow outdoors in the following regions:
Dayton, Kentucky
Salvisa, Kentucky
Falmouth, Maine
Marlborough, Massachusetts
Dearborn Heights, Michigan
Excelsior, Minnesota
Auburn, New Hampshire
Sandown, New Hampshire
Elizabeth City, North Carolina
Coshocton, Ohio
Cathan, Washington
John Sam Lake, Washington
Kalama, Washington
North Marysville, Washington
Priest Point, Washington
Shaker Church, Washington
Stimson Crossing, Washington
Weallup Lake, Washington
Milwaukee, Wisconsin
