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Pests & Diseases8 min read·April 14, 2025

How to Identify Common Houseplant Pests

Sticky residue, white fluff, or tiny moving dots? Here's how to identify the most common houseplant pests — and what to do next.

How to Identify Common Houseplant Pests

Finding pests on your plants is alarming, but catching them early makes treatment simple. Here's a guide to the most common culprits.

Spider Mites

Look for: Fine webbing underneath leaves, tiny moving dots, stippled (yellow-flecked) leaves.

Treatment: Increase humidity, mist leaves, wipe with neem oil solution. Repeat weekly for 3–4 weeks.

Fungus Gnats

Look for: Tiny flies hovering around soil, larvae in compost.

Treatment: Allow soil to dry out between waterings. Use sticky yellow traps. Apply neem oil to soil.

Mealybugs

Look for: White fluffy/cottony clusters in leaf joints and stem forks.

Treatment: Remove with cotton wool soaked in isopropyl alcohol. Spray with diluted washing-up liquid. Isolate the plant immediately.

Scale Insects

Look for: Brown oval bumps on stems that don't move. Sticky honeydew on leaves.

Treatment: Scrape off manually, then treat with neem oil.

Aphids

Look for: Clusters of tiny green, black, or white insects on new growth. Curled, deformed leaves.

Treatment: Blast off with a water jet. Spray with diluted soap solution.

Prevention Tips

  • Quarantine new plants for 2 weeks before placing with others
  • Inspect undersides of leaves weekly
  • Keep plants healthy — stressed plants are more vulnerable
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