We live in Victoria, B.C., and have just noticed these strange-looking growths on some leaves and round a flower bud at the top of a branch on our Pink Simplicity Rose. They look, in a way, like very tiny witches brooms.
Are they caused by some insect parasite, or what? Should we cut the branch off?
The plant looks healthy otherwise (apart from constantly losing flowers to the wandering deer population). The deer are being allowed to roam everywhere - even sometimes, downtown, and are wreaking havoc with peoples' gardens.
https://www.pbase.com/mtu_fulani/image/114690046
