Spider mites are tiny sap-feeding pests that commonly affect plants grown in protected environments. They feed on the underside of leaves, causing fine speckling, yellowing and reduced plant vigour. In heavier infestations, plants may develop fine webbing across leaves and stems. Spider mites can reproduce rapidly in warm, dry conditions, allowing populations to build quickly if not detected early.

• Inspect the undersides of leaves, where spider mites typically feed and reproduce
• Look for fine speckling or stippling on leaves, an early sign of feeding damage
• Check for fine webbing on leaves and stems in more advanced infestations
• Use regular crop inspections, particularly during warm and dry conditions when populations can increase rapidly

Early detection through regular monitoring is key to preventing spider mite populations from establishing in the crop.

Sciarid fly larvae can be controlled using beneficial nematodes and predatory mites that target the pest in the growing media. Introducing biological controls early and maintaining good monitoring helps reduce larval populations and protect plant root systems.