Photo courtesy of jciv at Flickr.com.
While they’re not as damaging as grasshoppers and locusts, leafhoppers do suck their sustenance from leaves, and have been implicated in causing a disease called “yellows” that sometimes shows up in lettuce.
To stop leafhoppers in their tracks, grease up some yellow plastic cups with Vaseline or a similar tacky material and attach them upside down to short stakes in the lettuce patch. The leafhoppers will be attracted to the cups, will hop onto them, and won’t be able to hop away. This won’t catch every one of them, but it’ll do a good job of triggering an abrupt population decline.
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