Gardenmom
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Location: Southern California

Powdery mildew solution

Does anybody have that recipe for a home-made spray for the powdery mildew that collects on roses? I think it's dish soap and ????? Can't remember. HELP!

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Grey
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I think you are right, it's dish soap & warm water. I think. I have my cheat sheet somewhere that tells me this stuff and I can't remember where I put it. Anybody?

Gardenmom
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Joined: Tue Mar 25, 2008 5:48 pm
Location: Southern California

Actually, after searching around on the net for awhile, I found out that we should never spray dish soap on our roses. Has anyone here done that and had good results??? The recipe I found is baking soda and highly refined horticultural oil mixed with water. I'll have to give it a try.

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imagardener2
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Location: Three Rivers, TX

Gardenmom wrote:The recipe I found is baking soda and highly refined horticultural oil mixed with water.
Would you post the recipe (amounts), please?

Gardenmom
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Location: Southern California

I know that it was 1 rounded tablespoon of baking soda to one gallon of water. I don't remember the amount of the horticultural oil. I wrote it down at home, and I'm going there for lunch. I'll post it this afternoon:)

Gardenmom
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Joined: Tue Mar 25, 2008 5:48 pm
Location: Southern California

OK, here it is: 1 rounded tablespoon of baking soda and 1 tablespoon of highly refined horticultural oil mixed in 1 gallon of water. This should be sprayed once every 7 to 10 days on top and underneath the leaves.

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imagardener2
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Location: Three Rivers, TX

Thank you!!!



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