Learn to Diagnose and Treat These 8 Lawn Diseases

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Powdery Mildew

Also known as:

  • Erysiphe graminis

Where is it found?:

  • In heavy shade.
  • In slow growing lawns.

What causes it?:

  • Low light intensity.
  • Cooler temperatures, between 60 and 70 degrees and high humidity.
  • Poor air circulation.

Brief physical description:

  • Cobwebby-type growth on the upper surface of leaf blades.
  • In advanced cases, leaf blades appear completely coated with talc or flour.

Best way to treat or prevent:

  • Increase light penetration and air circulation by pruning or removing trees and other vegetation.
  • Reduce watering if areas remain unusually wet for long periods.
  • Lightly fertilize to promote foliar growth. That way you’ll remove the infected leaf blades quicker.

Good to know:

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