I have a dozen hybrid tea roses of about ten varieties. The garden is in northern San Diego County, California, about 5 miles from the coast. The roses were purchased from wholesale nurseries and installed seven years ago by a landscape contractor.
In 2019, I began seeing thickened, elongated stems with copious thorns. Flower production was reduced. I suspect three of the roses, all next to one another, have Rose Rosette Disease. The internet shows many images of various RRD symptoms, but I haven't seen anything like these spindly, fern-like growths that appear to be coming from the root stock.
These sprouts look like miniature stems with no leaves; they are blunt-tipped. Are they a symptom of RRD?
Thank you for any information.
Thanks,
GrowDammit
