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Control Garden Mildew with Baking Soda PDF Print
Lawn & Garden TipsPlain household baking soda can help control powdery mildew in your garden. Dissolve 1/4 ounce of baking soda in 1 gallon of water. Spray it onto plant leaves weekly or after a rain. The baking soda serves as a preventative spray. Mildew spores cannot spread or reproduce so their development is stopped.