It is something of a myth that only roses that have been budded on to a rootstock by a nurseryman will grow. |
I would photograph the growths and have an arborist or nurseryman positively identify the growth. |
I would suggest you take some leaves to a certified nurseryman for proper disease identification and recommendation of a foliar fungicide. |
Crosby was sent out about 1876 by a Mr. Crosby, a nurseryman of Billerica, Massachusetts. |
The nurseryman sent thousands of plants all over the North Island and quite a lot to the South Island. |
Show your nurseryman a basic sketch, and ask for suggestions. |