Hmm...thank you. I see it on brand new bushes, like on the new DD I got from Home Depot. But it looks extra bad on a few of my older bushes. Do you know if there is more than one strain of it? Sometimes I see it more white/cream colored, and on others where it is more severe, yellow-orange. So if a rose is super healthy, it can have it but not show it? And then as it ages and maybe becomes less healthy, it shows up? Does it spread in the garden from one rosebush to another?
