Emerald Ash Borer Discovered In Lafayette, Colorado

Emerald ash borer discovered in Lafayette, Colorado

  • August 9, 2017

LAFAYETTE, Colo. — Emerald ash borer (EAB) has been discovered in Lafayette, the Colorado State Forest Service (CSFS) confirmed on Wednesday. Lafayette is now the third city in Colorado facing an EAB infestation.

Not entirely unlike the mountain pine beetle, which decimated pine trees across hundreds of thousands of acres in Colorado’s high country beginning in 2008, EAB has decimated ash tree populations in more than 25 states and parts of Canada, causing billions of dollars in damage over the last 15 years.

CSFS community forestry program manager Keith Wood also confirmed Wednesday the newly found infestation in Lafayette remains within Colorado’s EAB quarantine zone. That zone includes Boulder, where EAB was discovered in 2013, and Longmont, where EAB was discovered in 2016. Lafayette is less than 13 miles from each city.

“Having a new detection in this area was not unexpected,” Wood said. “But it certainly highlights the need for Front Range communities to be planning now, before EAB arrives.”

EAB has not been discovered in Denver, but the Denver City Forester’s Office began formulating its plan to combat the pest in 2013, knowing that 1 in 6 Denver trees is an ash and that it’s just a matter of time before EAB is found in Colorado’s largest city.

In the spring of 2016, the Denver City Forester’s Office launched the Be A Smart Ash campaign, which aims to educate Denver residents about how to identify ash trees and to solicit the public’s help in combating EAB.

Speaking of which, are you a Denver resident who’s unsure of whether you have an ash tree on or around your property? Visit our Do I Have an Ash Tree? page or utilize our interactive map to find out. If you do have an ash tree, visit our What Can I Do? page or our Get a Tree Professional page to begin laying groundwork for your EAB defense plan with the help of a Smart Ash Certified tree care professional.

Curious about how you can protect your ash tree from infestation? We have broken down a list of your EAB treatment options. If you decide you want to remove your ash tree, we can connect you with teams who can help you turn it into a beautiful table, door or even a bicycle. You can also apply for a free tree to be planted in your public right-of-way to help diversify Denver’s tree canopy and prevent against future threats like EAB.

Whatever you decide, let’s be clear: If you don’t make a plan to treat or replace your ash tree in the very near future, chances are you will lose it to EAB. So Be A Smart Ash and act now, Denver!

(Photo Credit: Colorado State Forest Service)

Emerald Ash Borer Treatment Options For Your Denver Ash Tree

Emerald ash borer treatment options for your Denver ash tree

  • August 1, 2017

DENVER — The emerald ash borer (EAB), which feeds on ash trees and is now the most destructive forest pest in U.S. history, has arrived in Colorado, and it’s knocking on Denver’s door. That fact is overwhelming in its own right.

But you might find yourself even more overwhelmed by all the treatments options available to protect your ash tree from EAB. That’s where we come in!

For starters, there are four treatment options that have been examined at length as part of a multistate insecticide study from Colorado State, Ohio State, Michigan State and Purdue universities. Below is a breakdown of each option.

You might also be happy to know that your Friendly Denver City Forester has put together a list of Certified Smart Ash tree professionals, all of whom have the right mix of know-how and tools to safely and effectively protect your tree from EAB.

  1. Trunk injection:
    1. Who applies treatment: Licensed pesticide applicators
    2. Treatment process: A licensed pesticide applicator will drill through the bark and into the outer sapwood of the ash tree, where they will inject the insecticide
    3. Frequency: 1-3 years, depending on selected product
    4. Effectiveness: When properly administered by a licensed professional, some trunk injections have shown to be 90 percent effective at controlling EAB, making this treatment the most effective method by far
    5. Drawbacks: Cost and potential drilling wounds. While the most effective, trunk injections that last multiple years are typically more expensive than other EAB treatments.
  2. Soil drench
    1. Who applies treatment: Licensed pesticide applicators, or property owners (if ash tree is under 15” diameter at 4.5’ off the ground)
    2. Treatment process: Though soil drenches vary, they’re typically applied in the form of liquid or as granules that are then watered into the soil around the tree after the area beneath the tree has been cleared, thus allowing the soil drench to take hold in the roots of the tree
    3. Frequency: The ideal frequency varies by product and the size of the ash tree being treated. But soil drench treatments should not be applied more than once a year.
    4. Effectiveness: Inconsistent. In some trials, EAB control was excellent, while others yielded poor results. That said, soil drenches administered by tree professionals proved to be more effective.
    5. Drawbacks: Effectiveness and environmental impact. While they proved to be better EAB control than no treatment, soil drenches are significantly more likely to fail than trunk injections. They’re also more likely to impact plants, insects or animals that may be near the tree.
  3. Bark spray
    1. Who applies treatment: Licensed pesticide applicators
    2. Treatment process: This formulated insecticide is sprayed on the bottom five to six feet of the ash tree using a common garden sprayer. That insecticide then penetrates the bark and is transported systemically throughout the tree.
    3. Frequency: Once a year
    4. Effectiveness: Inconsistent. The results of effectiveness testing on bark sprays have yielded similar results when compared to the testing on soil drenches.
    5. Drawbacks: Effectiveness and environmental impact. Pesticide can blow onto adjacent plants, potentially impacting plants, insects or animals nearby.
  4. Tree removal and replacement
    1. Who applies treatment: Professionals
    2. Treatment process: While some property owners may be savvy enough to plant a tree on their own, removing a tree is a complicated process that requires a tree professional – often times for permitting reasons
    3. Frequency: Just once
    4. Effectiveness: 100 percent. While getting a new tree to take hold presents its own challenges, removing and properly disposing of an ash tree is 100 percent effective at controlling the spread of EAB.
    5. Drawbacks: Losing a tree that may have intrinsic value to the property owner

So which treatment method is the best for ash trees in Metro Denver, an area that includes 1.45 million ash trees? Unfortunately, there isn’t one right answer.

The best treatment for your Denver ash depends on a variety of factors, and it really comes down to property owner preference, according to Denver City Forester Rob Davis.

“Step one has to be educating yourself — gain an understanding of the options and then make a decision about what’s best for you,” Davis said. “In reality, the best place to start is with a good arborist.”

So what defines a good arborist? Start with one who has been licensed by the Colorado Department of Agriculture to apply pesticides.

When you should be treating your ash tree? It’s true that EAB is yet to be discovered in Denver, but considering the pest has already been found in Boulder and Longmont, it’s just a matter of time before it arrives in Denver.

Tree Climbing Arborists Help Raise EAB Awareness

Tree climbing arborists help raise EAB awareness

  • July 24, 2017

DENVER — Arborists from across Colorado gathered in Denver’s Washington Park for the 2017 International Society of Arboriculture’s Rocky Mountain Chapter Tree Climbing Competition. Here, these talented professionals showed off the skills they utilize day-to-day caring for trees around the state.

From the speed climb competition to much more technical climbs, arborists put a mix of athletics, tree knowledge and math skills on display — and 9NEWS was there to capture it all.

Illustrating their true team spirit, this year’s participants all donned Be A Smart Ash competition shirts, helping raise awareness about an issue they combat every day in their field, the emerald ash borer (EAB). Now the most destructive forest pest in U.S. history, EAB has devoured ash trees in more than 25 states and caused billions of dollars in damage.

Though it hasn’t been found in Denver yet, the emerald ash borer has been discovered in Boulder and Longmont — and it’s just a matter of time before it arrives in the Mile High City, where 1 in 6 trees is an ash. The Be A Smart Ash campaign is aiming to help Denver residents identify whether they have an ash tree and then make an EAB plan before the pest arrives in the city.

And speaking of arborists, we can help you find one who is a Certified Smart Ash! Denver Parks and Recreation has developed a list of local tree professionals who are specifically certified to administer EAB treatments.

Hey Denver, Wondering If You’ve Got An Ash Tree? We Can Help!

Hey Denver, wondering if you’ve got an ash tree? We can help!

  • June 21, 2017

DENVER — Did you know 1 in 6 Denver trees is an ash? And did you know that each and every one of those ash trees is vulnerable to a tiny pest called the emerald ash borer (EAB)?

It’s what makes EAB the most destructive forest pest in U.S. history, and it’s why the Denver City Foresters Office launched the Be A Smart Ash campaign. One big part of that program is educating Denver residents on how to identify ash trees.

First let us draw your attention to our interactive, MyTreeKeeper map. Using data, technology and thousands of man hours from our diligent City Forester employees, the Be A Smart Ash campaign successfully mapped each ash tree in Denver to make identification as easy as possible.

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Apply For A Free Right-of-way Tree, Denver! But First, What’s A Right-of-way?

Apply for a free right-of-way tree, Denver! But first, what’s a right-of-way?

  • May 25, 2017

DENVER — The Denver City Forester wants to give you a free tree to plant in the right-of-way adjacent to your property in an effort to bolster and diversify the tree canopy in the Mile High City.

But first, let’s define exactly what we mean when we say “right-of-way” – and how much space you need in the right-of-way adjacent to your property in order to apply for a free tree.

For starters, here’s the official definition of right-of-way:

“The right-of-way is the public land that includes the street, tree lawn and sidewalk – the width of which is established by the City of Denver. The right-of way also defines the boundary line along the street frontage of a property.”

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Denver Botanic Gardens, Flobots collaborate on EAB music video for Be A Smart Ash

  • March 8, 2017

DENVER — What happens when you give a bunch of tree nerds access to a camera, Denver’s beautiful Cheesman Park, a metallic emerald ash borer suit and a local hip hop legend? One Smart Ash music video, that’s what!

Be A Smart Ash is proud to present “EAB (Get Ready),” a music video produced by our amazing partners at the Denver Botanic Gardens in collaboration with Open Media FoundationJohnny 5 of the Flobots and a cast of well-trained volunteer actors from the Denver City Forester’s Office, a division of Denver Parks & Recreation.

The goal of this project is to raise awareness about emerald ash borer (EAB), which feasts on the common ash tree. Having desecrated forests in more than 25 states and parts of Canada, EAB is now the most destructive forest pest in U.S. history.

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‘Tis Once Again The Season For Free Trees In Denver

‘Tis once again the season for free trees in Denver

  • February 24, 2017

DENVER — If you didn’t end up with a free tree from the Denver Digs Trees program, which began accepting wait list applications earlier this month, there’s still good news: You can now apply for a free tree to be planted in your public right-of-way from Denver’s Office of the City Forester!

That’s right. If your property is adjacent to a public right-of-way that fits these parameters, you can apply to receive a tree at no cost to you.

Why are we so interested in giving away trees? Well, we love trees, for one, and we’re always looking for ways to bolster and diversify our urban canopy in Denver. The second big reason has to do with a tiny green pest.

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Make Your Emerald Ash Borer Plan At The Colorado Garden & Home Show

Make your emerald ash borer plan at the Colorado Garden & Home Show

  • February 4, 2017

DENVER — Looking to find out if you have an ash tree vulnerable to emerald ash borer? Want to learn how to protect your ash tree from the most destructive forest pest in U.S. history? Would you like to discover a way to cost-effectively turn any urban tree you may need to remove into a functional and beautiful wood product?

Then you need to stop by the Be A Smart Ash booth at the 2017 Colorado Garden & Home Show at the Colorado Convention Center in Denver from Feb. 4-12!

Emerald ash borer (EAB) has already destroyed hundreds of millions of ash trees, causing billions of dollars in damage in more than 25 states. And while it may not have arrived in Denver yet, EAB was discovered in Boulder in 2013 and in Longmont just last year. So in reality, it’s only a matter of time before EAB arrives in the Mile High City and poses a direct threat to the Metro area’s 1.45 million ash trees.

That’s right folks: 1 in 6 Denver trees is an ash, and you may not even realize that you have one in your front yard or a nearby right-of-way.

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Downtown Denver Replaces Ash Trees Threatened By Emerald Ash Borer

Downtown Denver replaces ash trees threatened by emerald ash borer

  • November 7, 2016

(DENVER POST) — Emerald ash borer (EAB), now the most destructive forest pest in U.S. history, was discovered in Boulder in 2013. It’s yet to arrive in Denver, but that hasn’t stopped the Downtown Denver Partnership from planning ahead. Working with the City and County of Denver’s “Be A Smart Ash” program, the DPP has removed and replaced many of the ash trees in the downtown corridor.

“We’re tying to get as many trees in public right of ways before losing trees to emerald ash borer,” said Sara Davis, program manager for the city’s forestry office.