Gray Mold (Tomatoes)

Gray Mold


Description: Gray mold begins in cool weather. However,

unlike many diseases, it doesn’t need high humidity

to flourish. Low soil pH encourages more severe gray

mold infection. The most characteristic sign of gray

mold is its fuzzy, felt-like appearance.

Solution: If gray

mold has been a problem in past years, begin spraying

Soap-Shield® Fungicidal Soap

at time of transplanting. Once gray mold is established,

it spreads through plant tissue, so controls are of

marginal effect. Use our Accugrow Soil Test Kit, or check

with your County Agent to find where to have your pH

tested; if it is low, add lime to raise pH.


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