Expert: Ash borers likely survived frigid winter

(WLFI Photo, file)
(WLFI Photo, file)

WEST LAFAYETTE, Ind. (AP) — A Purdue University entomologist says an invasive insect that’s taken a big bite out of Indiana’s ash tree populations likely survived the frigid winter with few losses in its numbers.

Purdue exotic forest pest educator Adam Witte says the emerald ash borer’s larvae only die when temperatures reach minus 28 degrees beneath ash trees’ bark.

Witte says U.S. Forest Service scientists predict only parts of Minnesota and North Dakota become that cold.

Although some parts of the U.S. might see fewer emerald ash borer adults this spring, he says the insects’ high reproductive rate means the pests’ numbers will quickly rebound.

The emerald ash borer has been detected in 69 of Indiana’s 92 counties. The metallic-green beetle that’s native to Asia has decimated ash trees in several states since 2002. provides commenting to allow for constructive discussion on the stories we cover. In order to comment here, you acknowledge you have read and agreed to our Terms of Service. Commenters who violate these terms, including use of vulgar language or racial slurs, will be banned. Please be respectful of the opinions of others and keep the conversation on topic and civil. If you see an inappropriate comment, please flag it for our moderators to review.

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