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Spiral ginger
Scientific Name: Costus productus Gleason ex Maas
Synonym: Costus juruanus
Family: Zingiberaceae

Costus productus in the New York Botanical Garden greenhouse

Recommended Temperature Zone: sunset: 25-27 USDA: 10 Frost Tolerance: Needs to be kept inside from December to February in Phoenix Sun Exposure: Light shade Origin: Peru Watering Needs: Abundant water during growth periods Propagation: Clump division, stem cuttings

Spiral Gingers take their names from their spiral arranged leaves.

Cultural Practices:
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.

Propagation:
Spiral gingers can be propagated by laying canes, or part of canes horizontally under a fine layer of soil. The soil temperature must be above 75° F (23° C).