Hi all, about 4 years ago I bought a tree peony 'Koukamon' for my daughter's garden in Salt Lake City. She loves the dark red flowers, but last year we had one 'sport' pop up from the base with an unattractive mauve/pink color flower, and now she says this year there are several of these sprouts.
Could anyone advise us what to do about this? The one last year, we just cut off right down at the base of the stalk. I hoped that would discourage the sports, but it seems not.
Do these plants revert? Would this be a sprout of the root stock it is grafted on? Is it planted too shallow?
