Supposedly the will mutate somewhat easily. However, I don't see to many "sports" being offered for sale. Also, because they are so responsive to their environment, it is really hard to know if there is a mutation. Panache was a sport of something, and often a branch or two on a tree will revert back to no stripes, hence my :"Reverse". It is "one gene" different than Panache, in USDA / UC Davis testing.