Sylviaa;

I don’t know that there’s a good dwarfing rootstock being used for cherry trees..? Though everybody wants one (I want one too), I don’t think the ‘latest’ are being used for ‘homeowner trees’… yet.

“But WHAT do I do now?” Prune! …but wait till dryer weather closer to Spring. It may seem unimaginable lopping off half of their structure, but it works – and with cherries, may be the only thing you can do to keep them manageable

Early pruning is best, and with so much top growth, there’s quite a store of energy in their roots. Removing the most up-right growing branches will force the buds beneath the cut to push out new ‘shoots’ next season. Those shoots may be thinned or tied over to form the basic structure. Once that structure is developed, more horizontal than vertical, you may prune the trees back to one, or six buds worth of growth every winter.

It’s like Bonsai on a larger scale, and it’s fun. And, it’s about the only way to curb a cherry tree.