September is a pretty good time to be a gardener.
Fruits ripen. Leaves turn, but can be reused for mulch; some may dig up their last crop of spuds before slugs have a chance to attack.
But this autumn bounty is not free. With it comes a swell of unwelcome guests, like snails, the aforementioned slugs, and summer-fattened, grumpy wasps.
Usually, anyway. But if you’ve noticed a significantly lower stinging population than you’re used to at this time of year, it’s not just in your head.