Leafminers

Pests Biological Control Biocontrol Comments
Leafminers Dacnusa sibirica Parasitic wasp for all larval stages especially young larvae. Distribute parasitic wasps between leaves in the morning or evening. Monitor plants for leafminers. After 2-3 weeks, monitor leaves for parasitism by placing samples in a jar to watch for emerging wasps.
Leafminers Diglyphus isaea Parasitic wasp for all larval stages especially older larvae. Release parasitic wasps between leaves in the morning or in the evening. Carry open container throughout greenhouse to release wasps, then leave container open for remainder to leave. Suggested temperature of 75-90F. humidity of 80%. Watch for mines with dead larvae which can be seen by holding leaf up to light.