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 […]
Take a TourEmerald 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 websiteEmerald 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 to […]
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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 […]
Take a TourExtension 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 – 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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Large Deciduous Trees – 7.419
Print this fact sheet by J.E. Klett and E. Hammond* (10/17) Quick Facts… Trees provide shade, beauty and protection from harsh winter winds. Trees help moderate temperature extremes and offset poor air quality. Plant trees on the basis of space available, soil conditions, proximity to irrigation lines and water requirements. Plant trees prone to storm […]
Take a TourExtension Updates – January 22, 2015
To assure that all of you are kept up to date on a regular basis, the three regional directors and the state Extension Administration Office provides bi-weekly Extension Updates. This forum is for all Extension announcements, so if you have something to distribute, please forward it to Lori Bates with FOR EXTENSION UPDATE noted. January […]
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