If you’ve recently spent any time outdoors — or indoors, depending on your location — then odds are you’ve noticed an overabundance of one of the creepiest, albeit mostly harmless, insects in the U.S.

In spring, gardens burst into life. Weeds do too, and they can be the bane of a gardener’s existence. Rather than waging an all-out war, our efforts to manage weeds can be more effective when we ...