Excelsa can be prone to the disease also, but not nearly as bad. Blooming in Mid to late July, Excelsa puts out hugh clusters of deep muted red blossoms that starts out deep crimson at first changing to mulled wine and dusty pink as they age.
Flowers tend to stay on the clusters for a long time making for different colored ones.
These clusters make lovely, long lasting cut roses. Excelsas growth is very vigorous sending out large, hooked thorn laiden canes 12' or longer in great profusion. Her base can get very dense if not thinned some every year. In zone 5 and under we suggest growing this rambler on a low fense or as a ground cover for banks etc. If grown as a climber, her canes will have to be taken down and covered with leaves, dirt etc.