Haldi (Turmeric)

Turmeric (curcuma longa) is a rhizomatous herbaceous perennial plant of the ginger family, zingiberaceae. It is native to tropical south asia and needs temperatures between 20°c and 30°c, and a considerable amount of annual rainfall to thrive (materia indica, 1826, whitelaw ainslie, m. D. M. R. A. S. , via google books). Plants are gathered annually for their rhizomes, and re-seeded from some of those rhizomes in the following season.