- Regularly check the plants from mid-April onwards for sawfly larvae and pick them off by hand
- A pathogenic nematode, sold as Nemasys Grow Your Own, can be watered onto infested plants. The nematodes enter the bodies of the sawfly larvae and infect them with a bacterial disease. This nematode is available from some garden centres or via mail order (see below under 'Download')
- Spray when young larvae are seen, with an insecticide approved for use on gooseberry and red currants. Making sure that the manufacturer's instructions are followed.
- Suitable insecticides are thiacloprid (e.g. Provado Ultimate Bug Killer Ready To Use or Concentrate), lambda-cyhalothrin (e.g. Westland Resolva Bug Killer), deltamethrin (e.g. Bayer Provado Ultimate Fruit & Vegetable Bug Killer) or an organic pesticide such as pyrethrum (e.g. Py Garden Insect Killer, Scotts Bug Clear Gun for Fruit & Veg, or Doff All in One Bug Spray)
Pesticides for gardeners (Adobe Acrobat pdf document outlining pesticides available to gardeners)
Biological control suppliers (Abode Acrobat pdf)