How to remove spider mites from indoor plants? - briefly
Apply a thorough spray of insecticidal soap or neem‑oil solution to all leaf surfaces, repeating the treatment every 5–7 days until the pests are gone. Keep humidity low and improve air flow to discourage future infestations.
How to remove spider mites from indoor plants? - in detail
Spider mites thrive in dry, warm indoor environments and can quickly deface foliage. Effective control requires a combination of physical removal, cultural adjustments, and targeted treatments.
Begin by isolating the affected specimen to prevent spread. Inspect all leaves, undersides especially, for tiny moving specks and fine webbing. Use a strong stream of water to dislodge mites from the foliage; a handheld shower or a spray bottle set to a fine mist works well. Repeat this washing every two to three days for two weeks, allowing the plant to dry between applications.
Implement cultural changes that make conditions unfavorable for the pest. Increase ambient humidity to 50 % or higher by misting the plant, placing a tray of water nearby, or using a humidifier. Lower temperature slightly, keeping the room at 18–22 °C (65–72 °F). Avoid overcrowding and ensure good air circulation with a fan set on low speed.
When cultural measures are insufficient, apply miticidal interventions. Choose one of the following options:
- Insecticidal soap – dilute according to label, spray until runoff covers both leaf surfaces, repeat every five days for three applications.
- Neem oil – mix 1–2 % concentrate with water, apply in the early morning or late evening, repeat weekly for four weeks.
- Horticultural oil – use a petroleum‑based or mineral oil formulation, apply at 1–2 % concentration, re‑treat after 7–10 days.
- Biological control – introduce predatory mites (e.g., Phytoseiulus persimilis) according to supplier instructions; maintain humidity above 60 % for optimal predator activity.
Avoid broad‑spectrum insecticides that can harm beneficial insects and damage plant tissue. Always test any spray on a small leaf area before full coverage to detect phytotoxic reactions.
Maintain vigilance after treatment. Conduct weekly inspections for at least one month, looking for residual webbing or new mite activity. If re‑infestation occurs, repeat the water‑washing cycle and consider a higher‑potency oil treatment, ensuring the plant is not stressed by excess fertilizer or extreme environmental fluctuations.
Preventive measures include regular cleaning of leaves, periodic misting to sustain higher humidity, and quarantining new acquisitions for at least two weeks before introducing them to the collection. Consistent monitoring and prompt corrective actions keep spider mite populations below damaging levels.