tea tree oil?

whitejade(z5 MI)March 3, 2005

Has anyone tried using this essential oil in a mix for problematic roses? (black spot perhaps)

thanks in advance,

Chris

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althea_gw

I used it to sucessfully treat powdery mildew on a rose. It was useless for treating blackspot. I have thought about substituting tea tree oil for horticultural oil in Cornell Formula. That might be a good experiment to try this year.

    Bookmark   March 7, 2005 at 8:47AM
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