Double the beauty! Double Amaryllis are a distinctive variation on the large flowering version. The flower size and stalk height are the same as the large flowering Amaryllis, except that a "double" flower is produced. In essence, what you have is a flower within a flower. Large 26-28 cm bulbs, produce 4-6 flowers per bulb, grow to an average of 20 inches in height. Flowering time 7-9 weeks.