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Search Results for: "emerald ash borer"

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Insecticides Used to Control Emerald Ash Borer on Residential Shade Trees – 5.626

Print this fact sheet by W.S. Cranshaw** (2/20) Quick Facts…. Emerald ash borer wounds ash trees by tunneling areas under the bark.  When wounds become extensive, trees show symptoms of decline and, ultimately, are usually killed. Several types of insecticide applications can control emerald ash borer. Emerald ash borer insecticides move systemically in plants and […]

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Emerald Ash Borer Detected in Broomfield

First ever confirmation of tree pest in Colorado outside related quarantine BROOMFIELD, Colo. – August 20, 2019 – National and state experts have confirmed the presence of emerald ash borer (EAB) – an invasive, highly destructive tree pest – in the City and County of Broomfield, northwest of Denver. This detection represents the first confirmation […]

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Emerald Ash Borer Resources

Colorado Department of Agriculture website Emerald Ash Borer (EAB) was found in Boulder, CO, in September 2013. As a non-native insect, EAB lacks predators to keep it in check. EAB only attacks ash trees in the genus Fraxinus (so mountain ash are not susceptible). Visit the Colorado Department of Agriculture website for the most up […]

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Recognizing Wood Boring Insects of Ash Trees in Colorado – 5.620

Print this fact sheet by W.S. Cranshaw* (1/19) Quick Facts… Being able to recognize the wood boring insects found in a tree is essential when making informed decisions on the need for control. In most of Colorado, the most important wood borer found in ash trees is the lilac/ash borer.  It makes an irregularly round […]

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Extension Update – December 14, 2018

On behalf of PLT: 4-H Youth Development – Jean Glowacki Cropping Systems – Ron Meyer Energy – Cary Weiner Environmental Horticulture – Alison O’Connor Family And Financial Stability (FAFS) – Gisele Jefferson Food Systems – Becca Jablonski Livestock & Range – Frank Garry Natural Resources – Marvin Reynolds NFSH – Jessica Clifford 4-H Youth Development […]

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Extension Update – July 10, 2018

On behalf of PLT: Next PLT Meeting and Training – Jan Carroll 4-H – Jean Glowacki Community Development – Greg Felsen Cropping Systems – Ron Meyer Energy – Cary Weiner Environmental Horticulture – Alison O’Connor Family and Financial Stability – Gisele Jefferson Food Systems – Becca Jablonski Livestock & Range – Retta Bruegger Natural Resources […]

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Extension Update – November 15, 2017

On behalf of PLT: Additional CSU Holiday – Friday, December 22 Grants & Funding opportunities UPDATED September DAC minutes available Update on Extension Mission, Vision & Values – Cary Weiner & Ashley Stokes Program Leadership Team (PLT) – Bill Nobles and Jan Carroll Additional CSU Holiday – Friday, December 22 Governor Hickenlooper has declared Friday, […]

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Extension Update – January 12, 2017

On behalf of PLT: Professional Development Funds – RDs & Judy Barth Planning & Reporting Unit Updates Community Development – Greg Felsen CPRS – Jan Carroll Cropping Systems – Ron Meyer Energy – Cary Weiner Environmental Horticulture – Alison O’Connor Family & Financial Stability – Laurel Kubin Food Systems – Becca Jablonski Livestock & Range […]

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Shade Tree Borers – 5.530

Print this fact sheet by W.S. Cranshaw* (1/19) Quick Facts… Wood borers are insects that develop underneath the bark of trees and shrubs. Certain beetles and moths are the most common borers. Insecticides can best control most shade tree borers if they are applied when adult insects are laying eggs on tree trunks. Most wood […]

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Lilac/Ash Borer: A Common Wood Borer of Colorado’s Street Trees – 5.614

Print this fact sheet by W. Cranshaw* (5/14) Quick Facts… Figure 1. Lilac/ash borer larvae tunneling exposed from under the bark. Photograph by David Leatherman. Figure 2. Tunneling produced in the base of a recently transplanted “Autumn Purple” white ash by the lilac/ash borer. Figure 3. Irregularly round exit holes produced when adult lilac/ash borer […]

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