Hi. I live in coastal California, USDA Zone 10 most of the time, and I planted some Ginger roots a year ago. They produced healthy four foot spikes of leaves and nice looking above-ground edible roots. They have yet to flower and seed. The Sunset Gardening Guide suggests that they need high temperatures and high humidity (the tropics!) to flower and seed. I guess that there is no way to replicate a tropical climate outdoors where we get cool cloudy overcast days during most of the summer, without constructing an expensive greenhouse. Would True Ginger flower and seed in coastal Texas, only zone 9, but with very hot and humid summers? Cheers, Jamesjames.