The Denver Office of the City Forester is looking for people to sign up for its free tree-planting program called Be a Smart ...

The Emerald Ash Borer was discovered in Boulder in 2013. This small beetle, which burrows under the bark of ash trees disrupting the flow of nutrients and water, is predicted to cause a 25 percent ...

For months, ash trees on city property in Cloquet have worn a ribbon of green plastic, declaring them at risk from Emerald ...

Crews on Friday morning were busy removing ash trees in Burlington’s South End. City Arborist VJ Comai says about nine percent of the 13,000 or so trees in Burlington are ash and need to be ...

In Colorado, thin-barked trees like honeylocust, ash, maple and linden are susceptible to sunscald and frost cracks because of the drastic temperature fluctuations in fall and winter. To prevent ...