Stories tagged ash trees

Yes, it's really cold in Minnesota today. As I write this mid Monday afternoon, the outside temp is -14 degrees. Schools are closed, many people are working from home, there is great despair in general. Unless you are an ash tree. This cold snap might just wipe out a great share of the Emerald Ash Borer larvae. Of course, it's not good news if you're Emerald Ash Borer larvae.

West Clay Pit at Lilydale: Wet weather can make the quarries at Lilydale very treacherous and even dangerous.
West Clay Pit at Lilydale: Wet weather can make the quarries at Lilydale very treacherous and even dangerous.Courtesy Mark Ryan
A rescue effort is underway right now in St. Paul where three children are reported to have gotten stranded in Lilydale Regional Park. A helicopter and several rescue units are on site. Two children has already been recovered and taken to hospital but one child is still missing. The children were part of a group of 4th-graders on a field trip from St. Louis Park.

Lilydale is a popular fossil collecting site for school field trips and others but the Decorah shale in the quarries where most of the fossils are found can become very treacherous in wet weather. The crumbly shale reconstitutes into a very thick, slippery muck when it rains making the steep quarry walls very unstable. Three inches of rain have fallen in the Metro area over the past few days.

A firefighter reportedly sustained injuries to his head from a falling rock during one of the rescues. Let's hope everything else turns out okay.

WCCO Radio report

Jun
21
2009

Emerald Ash Borer
Emerald Ash BorerCourtesy USDA
Driving around Saint Paul recently I’ve seen purple boxes hanging from trees, and I wondered what the heck they were. My wife helped me connect the dots between the purple boxes and the emerald ash borer (see ARTiFactor’s article for more info on the emerald ash borer). The Department of Agriculture and the Minnesota DNR is hanging the purple boxes to track and monitor the bugs.

We use a similar system in the museum. There are bug traps placed all over the museum that are not intended to eliminate bugs, but more to trap some so we know if bugs are in a certain areas of the museum and what kind of bugs they are.

The mailbox-sized trap’s color and smell attract the bugs and allow for tracking. The boxes will be removed this fall. Bark has also been removed from two dozen unhealthy trees in order to trap and track the pests. These trees will be cut down this fall as well.

The emerald ash borer is very difficult to detect. If you have an ash tree in your yard you can check for infestation by watching for die-back in the upper third of the tree, heavy activity by woodpeckers, D-shaped holes in the bark and S-shaped grooves under the bark. If you are a Saint Paul resident and notice these signs you are encouraged to call the forestry office at (651) 632-5129 if the tree is on public property and (651) 201-6684 if the tree is on private property.

I have also seen a massive number of billboards and heard radio ads from tree care companies promising treatment and protection from the pests. However, forestry experts indicate that there is no proven method for eradicating them.

The City of Saint Paul is preparing presentations for local district councils on what the City’s next step and what steps they can take to help. Several Saint Paul neighborhoods are potentially going to be especially hard hit as ash trees were popular with developers in post World War II neighborhood developments.

Updated information on the emerald ash borer for Saint Paul, Minnesota residents.

Jun
21
2009

Use local firewood: Transporting firewood endangers ash trees
Use local firewood: Transporting firewood endangers ash treesCourtesy RoguePoet

Will ash trees follow the fate of elm trees?

About 30 years ago my neighbor's kid won a college scholarship for his sketch of the dead elm trees in front of my house marked with big red X's. Now I fear for the the giant ash trees across the street in Como Park.

Apparently the emerald ash borer beetle (EAB) has been damaging our ash trees for years. The EAB were officially discovered in St. Paul's Hampdem Park mid May, 2009.

Minnesota has the second highest number of ash trees in the nation after Maine. Many of them were planted to replace trees lost to Dutch elm disease a generation ago.

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Where can I find information about the emerald ash borer?

The Minnesota Department of Agriculture (MDA) website has excellent information. Another, multinational website with the lastest information about EAB is emeraldashborer.info. I also recommend the University of Minnesota Extension website page which answers questions about ash trees and emerald ash borer beetles.

Frequently asked questions are below (click on them to get answers)

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What is Saint Paul doing for its ash trees?

Park director Mike Hahm says Parks and Recreation will do everything we can to protect our tree canopy. Saint Paul has been preparing for this for some time. For over 5 years, we have been increasing the diversity of the tree species in Saint Paul and have not replaced or replanted Ash trees. A Pioneer Press article titled Protecting ash trees could cost St. Paul $2.8 million annually explains:

"Hahm plans to start a campaign of removing affected ash trees at a rate of 3,000 a year and replacing them with other trees the following spring. In St. Paul's St. Anthony neighborhood, 67 trees already have been cut down. Hahm said he plans to apply immediately for nearly $2.8 million in state and federal money to fight the infestation."

This link will take you to the St Paul website page on emerald ash borer info.