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Oct 24, 2010 9:00 AM CST
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
What's your favourite prevention for powdery mildew. I had someone suggest potassium silicate for roses. Here's some info on a product that is available and was wondering if anyone has tried it.

http://www.pqcorp.com/literatu...
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Oct 24, 2010 4:46 PM CST
Name: Karen
Valencia, Pa (Zone 6a)
I was one of the first 300 contributors to the plant database! Cut Flowers Winter Sowing Charter ATP Member Seed Starter Echinacea
Plant and/or Seed Trader Region: Ohio Region: United States of America Butterflies Hummingbirder Celebrating Gardening: 2015
Never tried that. I use GreenCure. It works well, but might have to be applied every week or two if PM returns.

http://www.greencure.net/

Karen
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