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11.9.09

By John Latimer, KAXE Radio, Grand Rapids The last of the meadowhawk dragonflies will put in an appearance in early November. These small, bright red, insects are among the last to... Read More »

7.23.09

Just a quick post in case you missed it: The Minnesota DNR, Division of Forestry has published the June 2009 Forest Insect & Disease Newsletter (PDF).  This is by far... Read More »

6.9.09

MDA survey finds 59 St. Paul trees infested with emerald ash borer A multi-agency survey found 59 trees infested with emerald ash borer in and around the St. Anthony Park neighborhood... Read More »

3.17.09

Passing along an announcement from the Minnesota DNR, Division of Forestry: Greetings from MN DNR Forest Health! The March 2009 issue of the Forest Insect & Disease Newsletter, focusing on invasive... Read More »

3.5.09

By Steve Katovich, US Forest Service, St Paul, with contributions from Mike Reichenbach, University of Minnesota Extension In 2002, a small emerald green beetle native to Asia was found killing ash... Read More »

9.16.08

Update: September 2009 Emerald ash borer (EAB), an invasive species, threatens to kill Minnesota’s ash trees. In response, Andrew David, a University of Minnesota forest genetics researcher, and Mike Reichenbach, forestry... Read More »

4.29.07

A review of categories of insects affecting tree and forest health: Defoliators, borers, sap-sucking insects, root-feeding insects, cone- and seed-destroying insects, and non-native... Read More »

4.29.07

Fungal growth on birch: Jim Frazier photoForest health is affected by insect outbreaks, diseases, invasive species, regeneration, fire ecology, natural disturbance, and many other factors. Not all insects and diseases are bad. Native insects and diseases are... Read More »

4.29.07

Some of the most common invasive species in Minnesota’s woods include buckthorn, garlic mustard, Dutch elm disease and the emerald ash borer. Others that might not come to mind... Read More »

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