Changing Ash Habitats and the Wildlife Impact

Fraxinus Fuss A little green bug has potential to cause quite a bother in Minnesota when it comes to our trees in the genus Fraxinus, or ash trees. This pest, the emerald ash borer (EAB), is an invasive insect from Asia. First discovered in Michigan in 2002, it has caused the death of millions of ash trees in the eastern […]

Continue Reading

Webinar: EAB and Minnesota’s Ash Resource

Tuesday, April 18, 2017, noon – 1:15 p.m. Emerald ash borer threatens Minnesota’s ash resource. This two-part presentation will include an update on the status of EAB in Minnesota and relevant quarantines from Mark Abrahamson, EAB program lead at the Minnesota Department of Agriculture. We’ll then transition to case studies of silvicultural interventions to inform future ash management options. These presentations […]

Continue Reading

May 2016 webinar: EAB and woodland ash

Tuesday, May 17, 2016, noon – 1:00 p.m. With recent discoveries of emerald ash borer in and near Minnesota’s northwoods, foresters are getting more serious about silvicultural options as we face potential widespread ash mortality. Forest health specialist Bob Heyd has seen this loss first hand in Michigan and will share lessons from that experience. We’ll also hear from Andrew […]

Continue Reading

Emerald ash borer risk status in Minnesota

Q: What is emerald ash borer? Emerald ash borer (EAB) is a non-native insect transported from Asia to the US and identified in Michigan in 2002. EAB feeds on the tissue of ash trees between the bark and sapwood and disrupting the nutrient and water flow of the tree, eventually killing the tree after several years of feeding in the trees. […]

Continue Reading

September 2015 webinar: Hydrology of Black Ash Wetlands: Implications for management of the EAB threat

Tuesday, September 15, 2015, noon – 1:00 p.m. Hydrology of black ash wetlands is likely to be modified following EAB infestation, but the magnitude of alteration is not clear as we know relatively little about how these unique ecosystems function.  Findings from a large-scale experiment related to water table dynamics following manipulation of black ash stand composition will be presented and […]

Continue Reading

Using citizen science to combat Emerald Ash Borer

Have you heard about Wasp Watchers? There’s been some media buzz lately, with stories in the Star Tribune and Post Bulletin highlighting the program kicking off this summer. Wasp Watchers uses the smoky winged beetle bandit wasp as an early detection tool for Emerald Ash Borer (EAB). Citizen scientists throughout Minnesota will be searching for and adopting wasp nesting sites in order to collect samples […]

Continue Reading

New year, new quarantines: updates on the mountain pine beetle and emerald ash borer

The year 2014 concluded with a lot of activity in the area of  invasive species and forest health in Minnesota. Specifically, the Minnesota Department of Agriculture instituted a statewide quarantine for the mountain pine beetle and emerald ash borer was confirmed in a new county in the state.  Subsequent actions are two excellent examples of how the state is being […]

Continue Reading

Winter cold impacts on EAB: Minnesota data

By Eli Sagor, University of Minnesota Extension A few weeks ago the local and national media ran a number of hopeful stories about the effect of this year’s deep cold on EAB larvae overwintering under ash bark. We got in on it too: Will winter cold save us from emerald ash borer? Sensing perhaps a bit too much optimism, last week Dr. […]

Continue Reading

Will winter cold save us from emerald ash borer?

By Eli Sagor, University of Minnesota Extension Emerald ash borer is now established in Minnesota and poses a serious threat to our huge population of ash trees. As we shiver through this week’s “polar vortex fueled arctic superfront,” some have taken comfort from recent research suggesting that the cold may wipe out up to 80% of emerald ash borer larvae […]

Continue Reading