How to get rid of spider mite on begonias? - briefly
Apply insecticidal soap or neem oil to all leaf surfaces, especially the undersides, and repeat the treatment every 5‑7 days until mites are gone. Remove heavily damaged leaves and maintain moderate humidity to prevent recurrence.
How to get rid of spider mite on begonias? - in detail
Spider mites thrive on warm, dry conditions and can quickly defoliate begonia foliage. Effective control requires a combination of cultural, mechanical, biological, and chemical measures.
First, inspect plants regularly. Look for stippled leaves, fine webbing on the underside, and tiny moving specks. Early detection prevents severe damage.
Cultural practices reduce mite populations:
- Keep humidity above 60 % by misting leaves or using a humidity tray.
- Avoid overhead watering that leaves foliage wet for long periods; instead water at the soil level.
- Remove dead or yellowing leaves promptly.
- Space plants to improve air circulation and reduce leaf temperature.
Mechanical removal can eliminate many individuals:
- Rinse plants with a strong jet of water, focusing on the leaf undersides.
- Wipe leaves with a soft cloth or sponge soaked in lukewarm soapy water (a few drops of mild dish soap per liter).
Biological agents provide ongoing suppression:
- Introduce predatory mites such as Phytoseiulus persimilis or Neoseiulus californicus according to label instructions.
- Apply neem oil or horticultural oil at 1‑2 % concentration; these oils suffocate mites and their eggs while being safe for the plant when used correctly.
If infestations persist, resort to chemical controls:
- Use a miticide containing abamectin, spirotetramat, or bifenthrin, following the manufacturer’s dosage and re‑application interval.
- Rotate products with different modes of action to avoid resistance buildup.
Preventive steps maintain a low‑mite environment:
- Quarantine new begonias for two weeks before introducing them to existing collections.
- Clean pots, trays, and tools with a 10 % bleach solution.
- Monitor humidity and temperature daily; adjust heating or cooling systems to keep conditions unfavorable for mite reproduction.
A systematic approach—early detection, environmental modification, targeted sprays, and biological allies—keeps spider mite populations under control and preserves the ornamental quality of begonia foliage.