Root Mealybug
Hidden soil-dwelling mealybugs feeding on roots and crowns of ornamentals and container crops.
Root mealybugs (Rhizoecus spp., Phenacoccus subterraneus) live below the soil surface on roots and stem bases. Infestations cause stunting, yellowing, wilting and reduced nutrient uptake. They spread through contaminated pots, compost and plant material. Biological control includes entomopathogenic nematodes, predatory soil mites such as Stratiolaelaps scimitus, and drenches with Beauveria bassiana. Maintaining good hygiene and avoiding over-wet compost reduces pressure.
Biological Controls for Root Mealybug
The options below are examples of beneficial insects and biological products commonly used against root mealybug. Always refer to supplier guidance and product labels for crop safety and local registration status.
Cryptolaemus + compatible nematodes
Product: Cryptoline + nematodes
Environment: glasshouse
Temperature Range: 16.0 – 28.0°C
Rate: Beetles at standard rate; nematodes as per label via drench
Frequency: Repeat according to monitoring
Root mealybugs require integrated control: drenches + predators + cultural adjustments.
Related Biological Solutions
Growers dealing with root mealybug often also monitor these pests as part of a complete IPM programme: