Experts and BHG readers answer.
why did my rose bushes change?
If your roses were grafted, it's quite possible that the top, grafted part died off, and that what you're now seeing is the rootstock rose. If this is the case, it would be best to remove the roses and start with new ones. Own-root roses are now more readily available than they used to be several years ago. The advantage of own-root roses is that if the top dies back, anything that sprouts from the roots is still the same variety.