The Catasetum group are perennial orchids, which die back into dormancy each year. Chlorochilum is one of the most popular Cynoches. The flowers are large and the bright yellow is dominant. It is one of the easiest to grow. They are just coming out of dormany in March April and flowers open around September October. The bulbs are already 6 inches. These ship in 3 inch pots as we find they grow better and flower faster in the smaller pot.