Brought 3 ginger plants, 3 years ago they have never flowered, why?

Question

they have been planted in the soil in garden, not in pots, they come up, one bigger than the others

Answer 1

obviously you're doing something wrong. maybe you're not providing them with theire needed environment

Answer 2

Soil is the wrong medium they need something more

"The main cultivation of ginger takes place in zone 9. In cold-winter areas it must be grown indoors; as potted plants but they rarely bloom in winter. However, they do grow until they can be set outside in the spring.

They can be propagated from a small piece of the fresh rhizome that has at least one eye (sort of like the potato eye). Fill a small pot with professional potting soil and plant the root on its side parallel to the soil surface. Just barely cover the root with potting soil and pat down. Keep in a warm place until green stalks come from the eye. Transplant into a large pot filled with equal amounts of loam, sand, peat moss or compost. Fertilise and water regularly. Outdoors it likes a partially shaded location, and to be moved indoors before the first frost.

This fragrant, lovely plant has given us much over the centuries. It is one of the most complex and complete medicinals favoured by herbalists today. Research has shown our knowledge of its healing properties growing with each new study. Certainly a gift from a bountiful Creator."

Answer 3

They need high temperatures and humidity to flourish, if you are somewhere temperate then they won't ever get to flower unless you get them into a greenhouse or similar.