
roseman
Answered on September 26, 2015
It looks like perhaps the rosebushes were grafted roses and the top desired part died and the hardy root stock took over. Here are some links to articles on this subject for you:
https://www.gardeningknowhow.com/ornamental/flowers/roses/own-root-roses-grafted-roses.htm
https://www.gardeningknowhow.com/ornamental/flowers/roses/no-blooms-on-roses.htm
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