Andrew, this is why I stated temperatures wise. If you do not water during their summer growth period the plants will look pretty battered and finally die. Concerning Jim's comments, people grow it like a caudiciform with the tuber exposed above ground/mix, something they must deeply dislike as in the wild tubers are always deep in the ground and never exposed or shallow. > Sinningia tubiflora may come from an area with a temperature range similar > to that of San Diego as you state. But, from the annual rainfall amounts > there are other differences. In the large pots they grow fine, flowering > very well but, in order to achieve that I must water them all summer.