Costus barbatus in the New York Botanical Garden greenhouse
Sunset®: 25-27
USDA: 9-10
Frost Tolerance: Needs to be kept inside from December to February in Phoenix
Sun Exposure: Light shade
Origin: Costa Rica
Watering Needs: Abundant water during growth periods
Propagation: Clump division, stem cuttings
Spiral Gingers take their names from their spiral arranged leaves. There are a number of species native from tropical America, Africa, and Australia. They are fairly different from other gingers, and many botanists give them their own family (Costaceae).
Blooming Habits:
The Costus barbatus is a very popular cut flower. The blossom can last as long as a month on the plant.
Culture:
Spirals Gingers are not adapted to Phoenix weather, winter is difficult since they don't tolerate long periods of weather below 68° F (20° C). Keep them inside in winter. They also need more humidity than the average garden in Phoenix provides. Use regular application of palm fertilizer, and use mulch.
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