How can fleas be eliminated from a greenhouse? - briefly
Apply a greenhouse‑approved insecticide and introduce biological controls such as predatory mites, while keeping humidity low and cleaning regularly to disrupt the flea life cycle. Seal entry points and use sticky traps for early detection and ongoing prevention.
How can fleas be eliminated from a greenhouse? - in detail
Fleas thrive in warm, humid environments where organic debris provides shelter and food. Effective eradication in a greenhouse requires a combination of sanitation, environmental adjustment, biological agents, and targeted chemicals.
First, remove all plant litter, fallen leaves, and excess mulch. Vacuum or sweep surfaces daily, then dispose of the material in sealed bags. Clean pots, trays, and benches with a solution of hot water (at least 60 °C) and a mild detergent to destroy eggs and larvae hidden in crevices.
Second, modify climate conditions that favor flea development. Reduce relative humidity to below 50 % by improving ventilation and using dehumidifiers. Lower night‑time temperatures to 15–18 °C when possible; fleas reproduce most rapidly at 25–30 °C.
Third, introduce biological control agents. Predatory nematodes (e.g., Steinernema feltiae) applied as a soil drench prey on flea larvae. Beneficial insects such as predatory beetles (e.g., Staphylinidae) can also reduce adult populations when released in moderate numbers.
Fourth, apply selective insecticides only after thorough inspection. Use products labeled for indoor horticultural use, containing active ingredients such as spinosad or diatomaceous earth. Apply dust or spray to soil surfaces, under plant bases, and along drainage channels, following manufacturer dosage and safety guidelines.
Fifth, establish a monitoring routine. Place sticky traps at ground level and near plant stems to capture adult fleas. Inspect traps weekly; a declining catch indicates progress, while a sudden increase signals a need for additional treatment.
A concise action plan:
- Remove organic debris; vacuum and seal waste.
- Clean all surfaces with hot, soapy water.
- Lower humidity < 50 % and maintain cooler night temperatures.
- Apply predatory nematodes or beneficial beetles to soil.
- Use approved insecticidal dust or spray on affected zones.
- Deploy sticky traps; review counts weekly.
Consistent execution of these steps eliminates flea infestations while preserving plant health and preventing re‑colonization.