This plant is said to grow outdoors in the following regions:
Salvisa, Kentucky
West Bloomfield, Michigan
Concord, North Carolina
Coshocton, Ohio
North Augusta, South Carolina
Cathan, Washington
John Sam Lake, Washington
Kalama, Washington
North Marysville, Washington
Priest Point, Washington
Shaker Church, Washington
Stimson Crossing, Washington
Weallup Lake, Washington
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