Planted turmeric and ginger about four months ago in a fibre container (reuse of the bottom part of a broken water tank). We originally used it as a fish tank for baby fish but later converted it for growing plants in soil.
We tried an interim harvest of ginger and turmeric about a month ago and it turned out to be premature. We later learned that ginger leaves will turn yellow/brown and stem will fall over when it is ready to be harvested. Turmeric is also the same except that it will also flower when it ready.
We had two types of turmeric, one is intensity flavorful and almost orange in color. The other one is almost bland in flavor and color and almost looks like ginger. We actually thought it is ginger until we noticed that it smells like turmeric! 🙂