The short answer is yes, though it isn't recommended if the tree in question is in the immediate vicinity of trees that have previously been confirmed infested with Emerald Ash Borer. Areas with confirmed infested trees (Known EAB-infested Areas) are defined on a block-by-block basis - a map is available here - and as new areas are added to the map they are publicized in the Minnesota Department of Agriculture's EAB newsletter (we will post that info here...).Both pruning and removal of ash is not recommended in Known EAB-infested Areas during summer due to the risk of adult borers emerging from the material while in transit or at a disposal location. There is no evidence that pruning an ash makes it more attractive to EAB.
For more information, check out this website.
Submitted by the Minnesota Department of Agriculture
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