Roses forum: What does powdery mildew look like?

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Name: Toni
Denver Metro (Zone 5a)
Whiskey Tango Foxtrot.
Charter ATP Member Irises Salvias Xeriscape Birds I was one of the first 300 contributors to the plant database!
Garden Ideas: Master Level Garden Procrastinator The WITWIT Badge Region: Colorado Enjoys or suffers cold winters Cat Lover
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Skiekitty
Apr 22, 2010 11:26 AM CST
I just got in 2 roses from John's Miniature Roses and they both have this white powdery stuff on them. I don't have my camera with me today (need to charge the battery), so I can't take a picture. If it's powdery mildew, how do I treat it? It is contagious with other plants/roses? I got in Ernie & Bees Knees, the other two are on back order all the way to June. Sad I will NEVER order from Heirloom/John's Miniatures again.
Roses are one of my passions! Just opened, my Etsy shop (to fund my rose hobby)! http://www.etsy.com/shop/TweetsnTreats
Name: Toni
Denver Metro (Zone 5a)
Whiskey Tango Foxtrot.
Charter ATP Member Irises Salvias Xeriscape Birds I was one of the first 300 contributors to the plant database!
Garden Ideas: Master Level Garden Procrastinator The WITWIT Badge Region: Colorado Enjoys or suffers cold winters Cat Lover
Image
Skiekitty
Apr 22, 2010 1:31 PM CST
Update: I called Heirloom to see what it could be and the nice lady explained that powdery mildew doesn't wipe off easily. This wipes off easily. She then stated that they spray with some kind of .. stuff (she didn't know exactly what) to prevent blackspot/mildew from developing while in transit (that's reasonable).

Let's just see what happens. I'll try to get pictures tonight if I don't get washed away with these massive storms!!
Roses are one of my passions! Just opened, my Etsy shop (to fund my rose hobby)! http://www.etsy.com/shop/TweetsnTreats
Name: Zuzu
Northern California (Zone 9a)
Forum moderator Plant Database Moderator Charter ATP Member Region: California Cat Lover Roses
Clematis Irises Garden Ideas: Level 2 Celebrating Gardening: 2015 Plant Identifier Garden Sages
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zuzu
Apr 22, 2010 3:50 PM CST

Moderator

Oh, I would have told you that, Toni, but I was asleep. John's and Eurodesert and some other places powder their roses for shipping with something like sulfur to guard against disease. I'm glad you called them.

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