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Brown Bugs on French Lavender: Insecticidal Soap

Portland, OR: Aphid-sized brown bugs on French lavender leaves on balcony. No other plants nearby. Unknown if harmful.

Universal Soft-Body Treatment

Insecticidal soap kills aphids, spider mites, whiteflies, psyllids, mealybugs, scale crawlers.

  • Safe for you, plant, beneficials (when dry).
  • No residual—reapply weekly or after rain.
  • Commercial or DIY: 3 tsp mild liquid soap/gal water.

Why Soap First

  • ID uncertain without magnification.
  • Soap covers most likely culprits.
  • Low risk, low cost.

If persists after 3-4 applications, get ID from OSU Extension.

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