I have a pink Pseudobombax ellipticum grafted onto a white Pseudobombax rootstock. It's growing well but I noticed a couple small branches growing from below the graft. I know that with grafted trees any growth from the rootstock should be removed but I also like the white variety and wanted to know if I could allow the white branches to grow or will that cause a problem with the grafted portion? It's a well healed graft, about 3 or 4 years old.