Vermont Public Radio reports that "Vermont's forests are threatened by three insects that could devastate stands of many tree species, including the state's trademark sugar maple." Those insects include the hemlock woolly adelgid which has been found in New Hampshire and vermont, the Asian longhorned beetle which has been found in Massachusetts, and the emerald ash bore which has been found in New York and Quebec. In response to the insect threat, state officials are hoping to "keep timber and firewood out of the state that could be harboring the tiny bugs." Notably, "small insects can survive in firewood. When they reach maturity, they emerge and go in search of a live tree to infest."
State entomologist Jon Turmel explained, "I've been at it over 30 years and I can't emphasize that enough, that this is a real threat, that people should just buy their firewood locally, especially campers. These are the ones - the tree dies in the backyard. Well, you're gonna chop it up and bring it to the campground when you come to visit. Please. Don't do that. It's emphatic. I can't emphasize it enough. Leave your firewood at home. Please." Recently, "the federal government has become concerned enough that it's placed a quarantine on all firewood that enters the country from Canada. The quarantine says that before any firewood enters the U.S. from the north, it has to be heated to 160 degrees for an hour and 15 minutes."
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