Leafminer Control

Those winding white trails are larvae feeding inside the leaf — out of reach of any spray. Leafminer biological control sends in a parasitic wasp that reaches them where they live.

Leafminer larvae tunnel between the upper and lower leaf surfaces, so contact sprays struggle and resistance is common. Leafminer biological control solves it: Diglyphus for leafminers kills mining larvae directly inside the tunnel, giving clean, residue-free control.

Why choose biological leafminer control

Diglyphus parasitizes and host-feeds on larvae in the mine, leaves no residue, and fits organic and IPM programs — reaching the one place sprays can't and building control over successive generations.

How to build your leafminer program

Release Diglyphus at the first sign of fresh mines, confirmed with yellow sticky traps for the adult flies. The wasp paralyzes larvae in the tunnels and lays eggs on them, steadily reducing each generation. Remove and destroy heavily mined leaves to lower pressure.

What's in this collection

• Diglyphus isaea — parasitic wasp that kills leafminer larvae inside the mine.

Need to confirm the pest first? See our Leafminer Pests identification guide.

Frequently asked questions

How do you control leaf miners biologically?

Release Diglyphus isaea parasitic wasps early; they reach larvae inside the leaf that sprays can't, and build control over successive generations.

What is Diglyphus isaea?

A tiny parasitic wasp that paralyzes leafminer larvae in their tunnels and lays eggs on them, both killing and parasitizing the pest.

Do parasitic wasps get rid of leaf miners?

Yes — released at first sign and repeated, Diglyphus suppresses leafminer populations effectively in protected crops.

Why don't sprays work on leaf miners?

The damaging larvae feed protected inside the leaf, so contact sprays miss them and resistance develops quickly — a parasitic wasp reaches them directly.