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HarvestBench
Citrus mealybugs on a plant

Photo: Mikhail Khokhlov · CC BY-SA 4.0

Wikimedia Commons source

Garden pest

Mealybug

White, cottony sap feeders common on container plants and greenhouse crops.

Crops often hit: Container herbs, Citrus, Pepper, Tomato (indoors/greenhouse)

How to identify

  • White cottony masses in leaf crotches and on stems
  • Sticky honeydew and sooty mold
  • Slow-moving oval insects under the wax

Damage: Stunting, leaf drop, and sooty mold — especially in pots.

Control methods

  1. Dab small colonies with a cotton swab dipped in rubbing alcohol.
  2. Hose plants; isolate infested containers.
  3. Check new plants before bringing them home.

What products to use

We list product types and what to check on the label — not brand rankings, prices, or “we tested” claims. Always follow the label for your crop, and prefer the least disruptive option that works.

  • Insecticidal soap or horticultural oil

    When: Colonies too large to swab

    Look for: Labeled for mealybugs on the crop; repeat treatments for hidden nymphs