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Pest & Disease Library · Solutions

Spider Mite Control in Cannabis

Spider mites are tiny sap-feeders that stipple and bronze leaves, multiply explosively in heat, and resist conventional miticides. This page covers spider mites in cannabis & hemp.

Common crops affected

Why it matters

By draining cells they cut photosynthesis and yield, and infestations flare fast in hot, dry conditions and after broad-spectrum sprays kill predators. Their webbing protects them, so early control matters.

When it appears

Hot, dry weather; flares mid-season and after dusty or predator-disrupting conditions.

How to identify it

  • Fine pale stippling on the upper leaf surface
  • Yellowing, bronzing, then leaf drop
  • Fine webbing on leaf undersides in heavy infestations

How to manage it

  1. Reduce dust and heat stress where practical; protect predatory mites.
  2. Remove and destroy heavily webbed leaves.
  3. Spray Spider Mite Control on both leaf surfaces at 1:500; repeat every 3–5 days.
  4. Avoid peak-sun applications to prevent oil phytotoxicity.

Recommended Vegalab program

RoleProductUse
Primary controlSpider Mite ControlContact miticide; suffocates mites & deactivates eggs
Broader pressureMultiMite ControlMixed mite/insect pressure
Plant resilienceArmour BoostSilica for tougher tissue

Product claims, rates, and availability vary by jurisdiction; always follow the applicable label.