Conifer Pest and Disease Update 5/15/2023

In this edition:

  • Insects – Pest Scouting with growing degree-days (250-600 GDD50)
    • Scales
    • Mites
  • Diseases
    • Needle casts (Rhabdocline and Swiss needlecasts – Douglas fir, & Rhizosphaera – spruces)
    • Phytophthora
  • Soil fertility – resources

Please click “read more” below to get updates on pests, diseases, and other important resources for the week of 5/15/2023.

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