Chemical and organic control of gooseberry sawfly

When possible, tolerate populations of sawfly as defoliation rarely kills the plant. Insecticides should be used only as a last resort. Before application, ensure plants are receiving the appropriate cultural care and take steps to protect natural predators. 

Gooseberry sawfly may have up to three generations each year, with the larvae active from April to September. Look for larvae low down in the centre of the bush, as they can go unnoticed until they have eaten their way upwards, devouring the leaves as they go. 

Organic sprays containing natural pyrethrums can be used. These products have a short persistence so may need to be applied a number of times before the sawfly population is under control. 

Contact (spray) insecticides, particularly synthetic pyrethroids such as lambda-cyhalothrin, deltamethrin, and cypermethrin are also available for gooseberry sawfly control.

Follow instructions carefully when using insecticides. Plants in flower should not be sprayed due to the danger insecticides pose to bees and other pollinating insects. Insecticides can cause an outbreak of red spider mite since they often kill benefical insects that control mites.