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Aug 29, 2020 1:59 PM CST
Name: seil
St Clair Shores, MI (Zone 6a)
Garden Photography Region: Michigan Roses
Your roses look healthy and happy and well cared for! Watch those leaves as they mature now and you will see that as they grow out they will slowly become green. It is confusing because normal growth on a LOT of roses is a deep red color. If you don't know that it can be scary.

RRD growth will look very abnormal and distorted. The leaves will be a kind of odd cherry red color and are usually very thin and elongated and will be clustered sort of like a feather tuft at the ends of the canes. That's called witches broom. Other symptoms are EXTREME thorniness, like the bristles on a caterpillar. And those thorns generally stay very soft and never harden up to become prickly. Also you will see thicker canes growing out of thinner canes. If you look at your bush you will see that as it branches upward at each junction the newest cane is slightly thinner than the older one. On RRD infected plants it does the opposite. A quarter inch cane can have a half inch cane coming out of it. As I said, the growth will look much more abnormal usually.

And to throw another wrench into the mix, RoundUp or any herbicide spray will often mimic RRD growth. So it is important to know if anyone in your vicinity is spraying with herbicides. Even a house or two away the over spray can drift a long distance in the air currents and come in contact with your roses. My neighbor sprayed behind his garage for poison ivy and destroyed a few of my roses (along with several other plants I had) a good 100 feet away because they were down wind.

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