Is this Rose Rosette disease?

Asked July 18, 2019, 10:18 PM EDT

Hi, my name is Gary and I live in the Portland, Oregon area. The pictures I've attached are some samples from a few of the roses I have in my yard. I started noticing the distorted growth late last year, and now it's affecting about ten of my rose bushes.
Any idea on what it is, and what if anything I can do to help my poor beautiful roses?


Multnomah County Oregon

1 Response

No, this is not rose rosette.

This is inadvertent herbicide (weed killer) damage.
More specifically, it is from drift of glyphosate used the previous fall, most likely as a clean-up spray. The roses received a non-lethal dose which moved on a breeze or via spray turbulence.

Glyphosate, as you likely know, is the active weed-killing ingredient in Roundup and various other weed killers.

The roses may recover. But only time will tell.