Left Hand Valley Courier - All Local, All The Time

What are those things?


August 19, 2016

Photo by Mary Wolbach Lopert The ash tree at the northwest corner of 79th Street and Hwy 52, and the green and purple emerald ash borer traps.

There’s an odd, green triangle-shaped “thing” dangling from the large ash tree by the northwest corner by the intersection of 79th Street and Hwy. 52. A closer look shows a purple one higher up in the tree.

No, it’s not a late Mardi Gras celebration. Both are prism-shaped traps designed to catch the emerald ash borer (EAB), which has infested Boulder County ash trees.

According to the website Sinochemical.com, these three-sided sticky traps are designed to catch EABs. The different colors were selected based on the sensitivity of the borers’ eyes. Green traps generally catch mor...

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