I,ve only got my Zygo,s recently but it does seem that a lot of the hybrids grow very vigorously & soon fill the smaller pots.I just picked up a hybrid for my auntie from a local garden centre , it has 3 spikes , 3 PB,s & 4 new growths as well as the 2 with spikes.These must be pretty young plants but it has basically outgrown the 4" pot it,s in.