In Utah, grasshoppers and their famous cousins, Mormon Crickets, are more than just insects; they are part of our local history. During hot, dry years, these pests can emerge in staggering numbers, devouring gardens and crops across the Beehive State.
The GrasshopperMost Utah species are brownish-green with powerful hind legs for jumping. The Painted Grasshopper is a local standout, featuring striking black, yellow, and red markings.
The Mormon CricketDespite the name, these are actually "shield-backed katydids." They are large (up to 2 inches), flightless, and typically dark brown, black, or purple. They have a distinct "shield" behind their head.
The WingsGrasshoppers have functional wings and can fly long distances; Mormon Crickets are flightless and move exclusively by crawling or hopping.
The "Outbreak" CycleGrasshopper populations are dictated by the weather. A series of hot, dry summers often leads to "outbreaks" where millions of eggs hatch simultaneously.
Mormon Cricket MarchesThese insects are famous for their migratory "bands." They can travel up to a mile a day in a massive, crawling carpet, eating almost every green plant in their path.
CannibalismMormon Crickets are opportunistic. If they lack protein or salt, they will eat each other. This is why you often see them clustering on roads—they are eating the crickets that were flattened by cars.
Why are they eating my window screens?During extreme heat or drought, grasshoppers will chew on screens or wooden siding not for food, but to try and reach the cooler air or moisture inside the home.
Are Mormon Crickets dangerous?They don't bite humans or pets, but they are a major road hazard. When crushed by tires, their oily bodies make the roads as slick as ice, often requiring snowplows to clear Utah highways.
How do I protect my garden during a swarm?Floating row covers can protect vegetables. For large-scale outbreaks, professional baiting or perimeter treatments are the only way to stop a migrating band from entering your property.
