Further to the World on a Blackcurrant Leaf, today the Ichneumons and the Harlequins were joined by two more conspicuous flying visitors, some green Shield Bugs (true bugs, Hemiptera) and some swift yellow-abdomened Sawflies, most probably Gooseberry Sawfly. Both of these are held in definite disfavour by many gardeners, the bugs for sucking plant juices and possibly weakening plants or spreading disease, and the sawflies for making caterpillars which in a bad year can totally defoliate gooseberry bushes — it only happened to me once, and it was quite a shock: from seeing the first little green caterpillars to leafless plants only took a week or so.
Since then I have carefully checked the gooseberry every few days for signs of sawfly damage (and actual caterpillars). If there are just a few, I remove the affected leaves and squash any caterpillars I find; this usually does the trick. If there are many, which has only happened once or twice, I consider spraying, choosing a time without wind, after sunset so the bees aren’t flying, and work close to the bush to keep the stuff local. The approach seems to work well for bees and berries.
As for the bugs, well, I rather like their handsome appearance and their confident swagger. There always seem to be enough currants so I don’t mind if the yield is down a bit on what it might have been.