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**EAB ALERT: Sept 2019 - Emerald Ash Borer has been detected in Westminster, CO**

5497 Harlan Street, Arvada, CO 80002, US

(303) 431-8132

Jones Tree & Lawn

The Turf & Trees are Always Greener... on the Jones' Side of the Street!

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Call us today so our experts can help!

Emerald Ash Borer (Agrilis planipennis)

This highly destructive insect aggressively attacks all ash trees.  Untreated ash trees die in 3-4 years.  These flat headed borers originated from Asia and were first detected in Michigan in 2002.  This insect has since spread across America and was first detected in Boulder, CO in 2013.  Emerald Ash Borer is on the move and was recently detected in Broomfield, CO in August of 2019 and Westminster, CO in September of 2019.  The flight period for adults occurs in May where they seek out new ash trees for food and reproduction.  

Symptoms and signs

Canopy Thinning and Die back

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Flow of nutrients throughout the vascular system of the tree is interrupted, therefor growth decreases and die back occurs.

Excessive sucker/sprout growth

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New growth will occur at the base of the tree since the flow of nutrients can no longer reach the canopy.

D-Shaped boring holes visible

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Here you can see an almost perfect "D" where the borer has exited the tree.

s-Shaped Galleries under bark

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These galleries disrupt the vascular system of the tree.

Frass/sawdust at base of tree

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A trail of "dust" at the base of the tree is left  where boring occurred. 

Woodpecker damage

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Woodpeckers seek the larvae hidden within the tree's tissue.

Treatment options

Our Arborists can create a custom program for YOUR ash tree(s)

Preventive treatments include soil based, trunk sprays and trunk injections.  Treatments depend on the health of the plant and other factors to be considered are:

  • Location in Metro area
  • Site conditions surrounding tree on property
  • Impact on landscape if the tree has to be removed


Soil based and trunk sprays are annual treatments done March-September to kill the larvae.

Trunk injections will last up to 2 years and are usually done in the fall. 

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Jones Tree & Lawn

5497 Harlan Street, Arvada, CO 80002, US

(303) 431-8132

Hours

Mon

7:30 am – 5:00 pm

Tue

7:30 am – 5:00 pm

Wed

7:30 am – 5:00 pm

Thu

7:30 am – 5:00 pm

Fri

7:30 am – 5:00 pm

Sat

Closed

Sun

Closed