dear fellow orchid growers, i ahve a dendrobium and recently on one of the stocks, the leaves simply turned yellow and fell off. i also have a stock that is turning yellow. otherwise the plant looks good and has really grown a lot where it is. could the yellow be because of the hot weather we had for such a long time? also, when it blooms, how long should the blooms stay on before falling off? this spring, i remember they only stayed for a short time, maybe i did something wrong. is there a way to keep them longer?
