Dealing with Aphids and Mealybugs on Drosera capensis

Pest Control for Sundews: Chemical-Free and Chemical Options

A grower noticed twisted, warped new leaves on their Drosera capensis 'Red' growing in a terrarium under lights. Inspection revealed small green aphid-like insects (possibly mealybugs). Other nearby plants were pest-free.

Three Treatment Approaches

1. Submersion Method (Pesticide-Free)

Submerge the entire pot in water for 24 hours. This mimics natural flooding and drowns pests without harming the plant. Repeat after a few days to catch hatchlings. Effective for aphids, mealybugs, and fungus gnat larvae.

2. Pyrethrin or Neem Oil Sprays

Use any pyrethrin-based or neem oil pesticide labeled for houseplants. Critical requirements:

• No soap-based formulations (soap damages carnivorous plants).
• No added fertilizers (will contaminate soil).
• Follow label directions exactly.

3. "Revenge" Method: Sticky Trap

Dip a brush or cotton swab in sundew mucilage ("glue"), then brush over pests. They stick to the brush and can be killed or fed back to the plant. Labor-intensive but satisfying.

Prevention Tips

• Quarantine new plants.
• Inspect regularly, especially new growth.
• Maintain good air circulation in terrariums.