Roses forum: Powdery Mildew prevention

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Name: Joanne
Calgary, AB Canada (Zone 3a)
I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level Region: Canadian Charter ATP Member Seed Starter Roses
Plant Lover: Loves 'em all! Annuals Container Gardener Vegetable Grower Winter Sowing Enjoys or suffers cold winters
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Joannabanana
Oct 24, 2010 9:07 AM CST
Have you used potassium silicate for prevention of powdery mildew? It was a recommendation as a preventative and I am not familiar with it. I did find this info for a specific retail brand.

http://www.pqcorp.com/literature/SILMATRIXBROCHURE.pdf
Name: Zuzu
Northern California (Zone 9a)
Forum moderator Plant Database Moderator Charter ATP Member Region: California Cat Lover Roses
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zuzu
Oct 24, 2010 6:24 PM CST

Moderator

Hi, Joanne. I don't have to fight powdery mildew anymore now that I've taken out the old ramblers, which were the only roses that ever got it here, but I read the information just out of curiosity. It sounds as though this stuff works on the same principle as Messenger, which everyone used to rave about so much before it became unavailable: It's supposed to boost the plant's natural defenses. Sounds good to me.
Name: Joanne
Calgary, AB Canada (Zone 3a)
I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level Region: Canadian Charter ATP Member Seed Starter Roses
Plant Lover: Loves 'em all! Annuals Container Gardener Vegetable Grower Winter Sowing Enjoys or suffers cold winters
Image
Joannabanana
Oct 25, 2010 4:38 PM CST
Thanks Zuzu. Now to figure out what brands are sold in Canada and where

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