Emerald Ash Borer Discovered In Lincoln, Neb.

Emerald ash borer discovered in Lincoln, Neb.

  • August 28, 2018

LINCOLN, Neb. — Emerald ash borer (EAB) was first found in Nebraska in June 2016, but it has now been discovered in Lincoln, the state’s second largest city. The news was confirmed by the Nebraska Department of Agriculture (NDA) in partnership with the U.S. Department of Agriculture (USDA) on Aug. 22.

Previously, the NDA had confirmed infestations in Cass and Douglas counties. Douglas County is where Omaha, Nebraska’s largest city, is located. In addition to the discovery in Lincoln, the NDA also reported signs of an infested tree in the smaller town of Fremont, which is approximately 50 miles north of Lincoln.

“While it’s unfortunate we found EAB in Lincoln and signs of an infested tree in Fremont, it is not unexpected considering we have confirmed EAB infestations in Douglas and Cass counties,” NDA Director Steve Wellman said.

Read More
Traps Set To Determine If & When Emerald Ash Borer Reaches Denver

Traps set to determine if & when emerald ash borer reaches Denver

  • August 2, 2018

DENVER — If you’re wandering through one of Denver’s public parks this summer and find yourself looking up to admire one of the city’s historic ash trees, you might notice a green or purple object hanging from it.

So what the heck are these things?

They’re known as sticky traps, and the Denver Parks and Recreation’s Office of the City Forester has deployed them in strategic parts of the city in an effort to determine whether the emerald ash borer (EAB) has arrived in the Metro area.

Read More
172 EAB-infested Ash Trees To Be Removed Along Boulder Creek

172 EAB-infested ash trees to be removed along Boulder Creek

  • July 24, 2018

BOULDER, Colo. — One of the most iconic paths in Boulder, Colo. is about to lose one of its greatest features: a vast amount of the trees that shade it from the summer sun.

The City of Boulder Forestry Division announced in June that it would be removing 172 trees along the Boulder Creek Path beginning June 18 and continuing through September. The trees slated to be removed are ash trees that are either dead or dying after having been infested by emerald ash borer (EAB), the most destructive forest pest in U.S. history.

The majority of the ash trees scheduled to be removed along the Boulder Creek Path are under seven inches in diameter, and are located between the 9th and 30th streets. The path itself is about five miles long, and the area where the trees will be removed represents nearly a two-mile stretch of it.

The primary reason for the tree removal, according to the City of Boulder Forestry Division, is to mitigate safety issues caused by the potential for falling limbs from dead and dying ash trees affected by EAB. This move comes just a year after 121 trees were removed from the University of Colorado campus in Boulder for the same reason.

Read More
Emerald Ash Borer Detected In Superior, Colo.

Emerald Ash Borer Detected in Superior, Colo.

  • June 27, 2018

SUPERIOR, Colo. – State officials have confirmed the presence of emerald ash borer (EAB), an invasive, highly destructive tree pest, in the Town of Superior in southeast Boulder County. This new detection is still just within a quarantine area established to try and prevent the human-assisted spread of EAB. However, it represents the fifth community with confirmation of EAB in Colorado outside the City of Boulder, where the pest was first detected in 2013.

An estimated 15 percent or more of all urban and community trees in Colorado are ash species susceptible to being killed by EAB – and a majority of these trees are on private land. There are 1.45 million ash trees in Metro Denver, and in the City and County of Denver specifically, one in six trees trees is an ash.

EAB attacks and kills both stressed and healthy ash trees and is so aggressive that trees typically die within two to four years after becoming infested. Additionally, it may be years before an ash tree shows signs of infestation, and by then it may be too late to save. That’s why the Denver City Forester is recommending the preemptive treatment of ash trees in the metro area.

The pest was confirmed in Boulder this week, shortly after Boulder County foresters identified a dead adult EAB on a trap the county had set – along with a dozen others in targeted areas – to detect for early infestation of the pest. This particular trap was located on public property along the Mayhoffer Singletree Trail, near the intersection of West Thomas and Third Avenue in Superior.

Read More
All Eyes On Me: Emerald Ash Borer Emergence

All Eyes On Me: Emerald Ash Borer Emergence

  • June 1, 2018

DENVER — It is already June, which means we are at the start of Emerald Ash Borer (EAB) emergence season! Although EAB has not yet been found in the City and County of Denver, we know it is only a matter of time before its discovery.

EAB emergence season means it is time to start looking for the adult borers who leave “D”-shaped holes in the bark of the ash tree, roughly 1/8 inch in diameter. There are also several other telltale signs of EAB infestation like S-shaped tunnels that can be seen on the trunk and tree thinning and bark shedding. Dying ash trees also attract Northern Flickers, a type of large, brown woodpecker. It can take 2-4 years for trees to show signs of infestation.

EAB chews through the tree’s water and nutrient-conducting tissues, strangling the tree. If there is a high population of EAB in the tree, one-third to a half of the branches may die in one year. Most of the canopy will be dead within 2 years of when symptoms are first seen.

Read More
The Smart Ash Explains EAB Treatment Options

The Smart Ash Explains EAB Treatment Options

  • May 24, 2018

Be A Smart Ash has been turning Denver residents into smarter tree owners since 2016. And while emerald ash borer (EAB) hasn’t yet been found in Denver, we know it’s just a matter of time. But even if Denverites know if they have an ash tree in their yard, they still may need more details about treatment options.

While ash tree treatment seems like a straightforward topic, it can be surprisingly complex. In fact, it combines a good bit of chemistry, can depend on how you feel about your tree, involves some budgeting, and the options can be difficult to demonstrate. In short – ash tree treatment is anything but straightforward.

Enter The Smart Ash. Voiced by our very own Denver City Forester Rob Davis, and inspired by the popular PBS Kids show Wild Kratts, The Smart Ash is a character on a quest to defeat EAB and defend the ash trees that make up Denver’s invaluable urban forest. The campaign is designed to be entertaining but informative – especially when it comes to emphasizing safety and the value of working with a tree care professional to treat or remove trees.

So, join The Smart Ash as he breaks down the various ash tree treatment options into a handful of short videos. Whether you’re searching for a specific treatment option or want to peruse the variety that are available, The Smart Ash has you covered.

Be A Smart Ash EAB Awareness Campaign Winning Hearts In Denver

Be A Smart Ash EAB awareness campaign winning hearts in Denver

  • March 24, 2018

Below is an excerpt from a larger feature story that appeared in “Parks & Rec Business” in February 2018. It was penned by Sara Davis, the Urban Forestry Program Manager with the Office of the City Forester, a division of Denver Parks & Recreation. She is also one of the creators of the Be A Smart Ash campaign.

DENVER, Colo. — In the city and county of Denver, Colo., one in six trees is an ash, making it vital that residents understand how they can save the ash trees and protect the city’s urban forest. The Be A Smart Ash movement, an unexpectedly irreverent, city-driven, five-year campaign launched in 2016, has rallied citizens to protect the ash trees from the Emerald Ash Borer (EAB). The campaign’s goal is to encourage residents to take action, identify ash trees, and (when necessary) treat or replace them.

One year later, citizens, community leaders, and tourists are falling in love with the campaign, which includes:

  • An original song and outrageous music video sponsored by Be A Smart Ash and produced by Denver Botanic Gardens and Jonny 5 of The Flobots
  • An interactive map, using tree inventory data that allow citizens to quickly assess whether there is an ash tree on their property
  • Bus tails: “Big Ash, Small Ash: No matter the size, it’s time to get your ash in gear”
  • Tree tags: “This Ash is Covered,” following treatment by the city
  • Tree wraps that are winning hearts
  • A playful but informative Twitter handle, @BeASmartAsh.
Emerald Ash Borer Discovered In Lyons, Colorado

Emerald Ash borer discovered in Lyons, Colorado

  • March 22, 2018

LYONS, Colo. — State officials have confirmed the presence of emerald ash borer (EAB) – an invasive, highly destructive tree pest – in the Town of Lyons in northern Boulder County. This new detection is still just within a quarantine area established to try and prevent the human-assisted spread of EAB. However, it represents the fourth community with confirmation of EAB in Colorado outside the City of Boulder, where the pest was first detected in 2013.

An estimated 15 percent or more of all urban and community trees in Colorado are ash species susceptible to being killed by EAB – and a majority of these trees are on private land. EAB attacks and kills both stressed and healthy ash trees and is so aggressive that trees typically die within two to four years after becoming infested.

An arborist recently identified an ash tree on private land in the vicinity of 4th Avenue and Broadway Street in Lyons as potentially infested with EAB. The property manager notified members of the interagency Colorado EAB Response Team, which is working to manage the spread and impacts of the pest in Colorado. An adult beetle specimen found in the tree was provided to the Colorado Department of Agriculture (CDA) and then confirmed by Colorado State University experts as being EAB. The infested tree and surrounding trees also are being examined by experts from the CDA and Colorado State University Extension.

Read More
Don’t Judge A Tree By Its Cover: Winter Tree & EAB Treatment Guide

Don’t judge a tree by its cover: Winter tree & EAB treatment guide

  • February 6, 2018

DENVER — Although winter is the time when trees go dormant, it is a good time to start planning for tree care. It might be hard to tell in the winter, but not all ash trees are healthy and thriving. They may look okay on the outside, but the inside might be another story, and no matter the time of year a tree professional can help assess your tree.

For example, a large ash tree in Louisville was recently removed causing a bit of stir in the neighborhood. The tree provided valuable shade to neighboring houses close to the downtown area. But, despite the healthy exterior, what couldn’t be seen on the outside was that the center of the tree was hollow. A hollow tree can be a major safety issue.

“A cavity in a living tree can contribute to a tree being unsafe,” said Sara Davis, Urban Forestry Manager, Office of the City Forester, City and County of Denver. “When a tree develops problems, it is frequently difficult to decide when to replace or remove it. The one option you shouldn’t consider, however, is treating or replacing your ash tree yourself if you’re not a licensed tree professional.”

Read More
1st Grade Ashvocates Help Spread EAB Awareness In Denver

1st Grade Ashvocates Help Spread EAB Awareness in Denver

  • November 30, 2017

DENVER — Ashvocates at Denver Public Schools’ Downtown Denver Expeditionary School (DDES) hit the city streets to learn more about ash trees, Emerald Ash Borer  (EAB) and ways to combat the borer. These students know that the impending arrival of the EAB is nothing to kid about.

“We should protect ash trees,” a DDES first grader said. “Ash trees make oxygen and shade. And without ash trees, we’d be so hot! Please help save the ash trees!”

The Expeditionary Learning approach to teaching and learning makes subjects come alive for students by connecting learning to real-world issues and needs. By utilizing Downtown Denver as a campus, DDES students were able to identify, touch and feel many of the ash trees lining the public streets. When asked how to treat trees for EAB, one student said, “You can put special medicine in the trees.”

Read More