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Illustration of an adult citrus root weevil seen from above, a pale blue-green weevil with a short snout and pale yellow edges along its wing covers

Citrus Root Weevil

Pachnaeus spp.

Blue-green weevils whose larvae feed on citrus roots in the soil, while the adults notch the edges of young leaves.

How to control citrus root weevil

Use
Heteromask Spray
When
Mid-July through September, when the soil is above 70°F and moist.
Where
Moist soil under the tree canopy, followed by plenty of water.

Shop Heteromask Spray

What it looks like

Citrus root weevils, also called blue-green weevils, are pale blue-green weevils with a short snout. They're a pest of citrus in Florida.

The adults lay eggs on leaves, and the newly hatched larvae drop to the ground and burrow into the soil, where they feed on the roots.

Damage

The larvae feed on the roots of citrus trees, weakening them. The adults chew notches in the edges of young leaves. Along with the Diaprepes root weevil, they're one of the root weevils that need active control on mature citrus trees.

How nematodes help

The beneficial nematodes in BioLogic's products hunt down weevil larvae in the soil, where they're out of reach of most other controls.

How to apply

Treat with Heteromask from mid-July through September, when the soil is above 70°F and moist.

Apply to moist soil under the tree canopy, and water it in well afterward.

See How to apply for step-by-step directions, or use the calculator on the Heteromask Spray page to see how much you need.

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