The mission of the Maui Association of Landscape Professionals (MALP) is to exemplify leadership by offering education to its membership, the industry, and the community.

Downy Mildew

Peronosporaceae

Plants Affected
  • Impatiens – one of the top bedding plants in North America, Basil
Signs & Symptoms
  • Leaves begin to yellow then curl

  • Fluffy growth starts to appear under the leaves

  • Leaves drop off

  • Plant continues to struggle then die

How to Fix the Problem
  • Remove affected plants & debris on ground

  • Water just before daylight or during day to stop spreading & avoid overhead irrigation if possible

  • Some chemical controls are available

  • Downy mildew resistant impatiens