Directions

  1. Mix all ingredients well,
  2. Spray plants when you spot the very first sign of powdery mildew—a grayish coating on leaves. Coal both sides of leaves thoroughly. Spray every 7 to 10 days until daytime temperatures start getting into the 70s.

Yield: About I gallon of Powdery Mildew Solution

Note: On plants with chronic powdery mildew problems, use this spray as a preventive. Spray once or twice in very early spring before any sign of disease appears. If you notice powdery mildew, take action to stop its spread. Remove all affected leaves and spray with a baking soda solution. Prune or thin to improve air movement around the foliage. Finally, make sure the plant isn't stressed by drought or other problems,- stressed plants seem more susceptible to infection.

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The fungal disease powdery mildew is ugly but it seldom does serious harm. If you're growing a plant that's susceptible to the fungus—check the list below—and don't like how it looks, keep baking soda and Murphy's Oil Soap handy for a quick preventive spray.

Trees and Shrubs Crabapples (Malus spp.) Crape myrtle (Lagerstroemia indica) English oak (Quercui robur) Euonymous (Euonymous spp.) Hackberries (Celtis spp.) Honeysuckles (Lonicera spp.) Lilac (Syringa vulgaris) Privets (Ligustrum spp.) Roses {Rosa spp.)

Flowers Bee balm (Monarda didyma) Dahlias (Dahlia hybrids) Delphinium (Delphinium x elatum) Phlox (Phlox paniculata) Zinnia (Zinnia elegans) 1*

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