Darling Buds

I am currently growing some Zamaldelicas that expressed the same mutation. Whorled phyllotaxy is the common name for this. Most likely, HST technique like topping will break the apical growth and risk that the mutation will not continue. It could ended with a fascination type of top flower. Fascination is not polyploidism. If you want to see something different don't risk to top her. Try other LST techniques to maintain an even canopy.