|'The Magician' Rose Rosette|
Last Saturday, after the leaves finally were blasted off the roses by a cold spell, I used the opportunity of the bare stems to assay my roses for any signs of Rose Rosette disease. And, of course, I found plenty of possible lesions, on 5 different roses to be specific. One of the more definitive examples is pictured at the upper right, from a cane on 'The Magician', a recent shrub rose bred by Dr. John Clements. The red arrow shows the thickened, thorny cane in question, originating from the much smaller branch indicated by the white arrow.
|'Darlow's Enigma' Rose Rosette|
In the positive column, only a single cane was affected on each rose and each one high on the cane at that, and I wacked every one of these diseased canes off at the ground level in hopes that the virus didn't spread to the base. I would also note that none of these roses are over 3 years old (are they thus more susceptible than established roses?) and that I found no lesions on any of my Old Garden Roses or my "real" Rugosa Hybrids (I don't really count 'Vanguard' here since its foliage is not very rugose).
|'Vanguard' Rose Rosette|