the rhizomes can be stored and replanted the following season. It can take 8-9 months from planting to harvest.
In tropical climates, it can be planted any time.
In cooler climates, plant it in early spring to ensure enough warm weather to grow a decent crop of rhizomes. Red Ginger is edible and is a very useful plant for the cultures that grow it. It is grown the same way as you would the common edible ginger and grows to a similar height. Red ginger is commonly grown in Southeast Asia and is used as a food source.
This post highlights several ornamental ginger plants that are edible. However, there can be some confusion around what ginger is edible, and what isn’t edible. The ginger plant family is large, and most of the attention from people falls on just a couple of proven varieties like common ginger, turmeric, and galangal.