Take Off Your Rose Colored Glasses

Downy mildew was identified in Knock Out® rose samples submitted to the Plant Diagnostic Lab from a south-Jersey nursery this week. Knock Outs®, which have few problems, have been a favorite in New Jersey landscapes in recent years. Unfortunately, it seems this plant has met its Achilles’ heel.

downy mildew on double knock out rose

Downy mildew on Double Knock Out® rose. Photo: Sabrina Tirpak, Rutgers PDL

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Plant Diagnostic Lab Highlights June 28, 2012

Downy fungal growth impatiens leaf underside

  • Turfgrass
  • SummerPatch, Anthracnose, and Weevil
  • Pythium
  • Downy mildew of Impatiens

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