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Greenhead Fly Traps

The Greenhead Fly

Greenheads are a species of a horse biting fly found in New Hampshire coastal areas.  They are not partial to only biting horses, they will take advantage of any warm body. These large green flies are quick to ruin anyone's day at the beach, are hard to kill and their bite is painful. Fortunately their season is short, starting early July and ending mid to late August. 

Greenhead Fly Traps

Greenheads fly under the blue box, much like they would a four legged animal to bite the underbelly but instead they fly up inside the box and get trapped.  The screens funnel them in and most can't find their way back out.   Dragon paints them blue because studies have shown that royal blue attract higher numbers of Greenhead flies than other colors. 


GHT in Rye.jpg

What Dragon Provides

To help reduce the numbers of these nuisance flies, some NH coastal towns hire Dragon to build, place out, and bring traps back in from the salt marshes at the end of the season.  

Budget limitations don't allow us to put them near every single property that abuts the salt marsh, however we do try place them in a way to catch the maximum amount.

Every year Dragon crews assess each marsh for proper placement. 


If you would like to learn how make your own, just click the link below for the blueprints.

Click here to download and build your own Greenhead Fly Trap

How to make your own

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