Plant Trees Now for Diversity
Many Coloradans plant trees in the spring because it’s the best time of year to get new trees established. With the exotic, tree-killing emerald ash borer (EAB) establishing its presence in the state, there’s one more reason for planting in Colorado communities this year.
“Now is a great time to consider planting trees for any reason,” said Keith Wood, community forestry program manager for the Colorado State Forest Service. “One good reason is to ultimately replace ash trees that may later succumb to emerald ash borer.”
EAB, a non-native pest responsible for the death of millions of ash trees and billions of dollars in costs in more than 25 states, was confirmed in the City of Boulder in 2013. Last year, EAB also was detected in Longmont, and further spread is anticipated in Colorado.
Although EAB has not yet been confirmed in Colorado outside Boulder County, one of the reasons the exotic pest is a concern for communities all over Colorado is that an estimated 15 percent or more of all urban and community trees in the state are ash.
Wood says that with EAB expected to kill thousands of Colorado ash trees in the coming years – and because it takes decades for most planted trees to reach maturity – it makes sense for homeowners to not only assess the health of their ash trees this year, but to also plan for the possible loss of those trees down the road. He and other experts with the interagency Colorado EAB Response Team also want to make sure that Coloradans avoid planting any true ash species (genus Fraxinus), and that they remember to always plant for tree diversity on their properties and in their neighborhoods.