How can I save impatiens from spider mites? - briefly
Treat the plants with a vigorous spray of water to knock off mites, then apply insecticidal soap or neem oil to both leaf surfaces every 5–7 days. Remove heavily infested foliage and maintain high humidity to suppress further infestation.
How can I save impatiens from spider mites? - in detail
Impatiens are vulnerable to spider mite attacks, which appear as fine webbing and stippled leaves. Early detection prevents severe damage. Inspect plants weekly, focusing on the undersides of foliage. Light-colored spots indicate feeding, while tiny moving dots confirm mite presence.
Cultural measures
- Maintain humidity above 60 % by misting plants or using a humidifier; spider mites thrive in dry air.
- Space plants 12–18 in. apart to improve airflow and reduce leaf temperature.
- Water at the soil level, avoiding overhead irrigation that leaves foliage wet and encourages fungal competitors.
- Remove weeds and debris that can harbor pests.
Physical removal
- Spray affected leaves with a strong jet of water to dislodge mites and webs; repeat every 2–3 days until populations decline.
- Prune heavily infested stems, discarding them far from the garden to prevent re‑infestation.
Biological controls
- Release predatory mites (e.g., Phytoseiulus persimilis or Neoseiulus californicus) according to label instructions; they consume spider mites and reproduce quickly.
- Apply neem oil or insecticidal soap at the recommended concentration, covering both leaf surfaces. Reapply every 5–7 days during active growth.
Chemical options
- Use acaricides containing abamectin, bifenazate, or spiromesifen only when other methods fail. Follow label rates, rotate active ingredients, and observe pre‑harvest intervals to avoid resistance buildup.
Monitoring and record‑keeping
- Keep a log of inspection dates, treatment types, and observed mite counts. Adjust strategies based on trends; decreasing numbers indicate effective control, while rebounds signal the need for alternative measures.
By integrating humidity management, sanitation, targeted sprays, beneficial predators, and, when necessary, selective acaricides, impatiens can be rescued from spider mite infestations and continue to produce vibrant blooms.