Cottony Balls on Bougainvillea: Cottony Aphids or Mealybugs—Natural Repellents and Neem Oil

Likely Pest

Small, round, fluffy white balls at leaf bases/undersides on indoor blooming bougainvillea = cottony aphids or mealybugs. Soapy water alone is insufficient.

Natural Repellent Sprays

• Pepper spray: 2 cups water + 2 tsp cayenne/jalapeño powder.
• Peppermint spray: 2 cups water + 20 drops peppermint oil.
• Apply to leaves and surrounding area.

Stronger Option

Neem oil (ready-to-use) kills aphids, mealybugs, mites, and fungi. Spray weekly until gone.

Cultural Aid

If weather permits, a gentle rain shower washes off pests and deposits nutrients.