It is clear from Darkover Landfall that some food plants were brought to Darkover by the colonists. Whether the ones mentioned in the chronologically later books are the same is not clear. Of course, the original stock may have been subject to selection to adapt to a redder sun and colder temperatures. Also, it appears from several of the books that the castles and great houses of the Comyn have greenhouses for the growing of vegetables and herbs. In "The Forbidden Tower", Chapter 7, Damon Ridenow says that plants on Darkover have adapted by evolution to flower in winter, if there are a couple of warm days. He says that "ice-melons" cannot be grown on the plains of Armida: "It's too warm -- they're a plant of the glaciers."