For the last three years our gooseberries have been plagued with Sawfly. The plants have been moved to a different location but they still have it. Any suggestions apart from nematodes please as they are expensive and hard to get hold of.
I've heard munching with rhubarb leaves will prevent infestation (though not stop it once they get going). Spraying with rhubarb leaf 'tea' works on lots of bugs, particularly soft-bodied ones, but I try to avoid it if I can as I'm not sure how it affects the beneficials.
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