aspen tree leaves turning brown - GARDENING
Vail Daily: Some trees are already turning yellow in Colorado’s mountains. Here’s why.
Jun 01, 2026
Vail Daily: Some trees are already turning yellow in Colorado’s mountains. Here’s why. Colorado State Forest Service entomologist Dan West says the first reports of yellowing aspen leaves started in mid-August.
Context Explanation
By late last week, as sightings of possible fall foliage continued across ... DENVER (KDVR) — What changes colors, shakes and covers five million acres of Colorado? Quaking aspen trees — they’re a “symbol of the Colorado high country,” according to Colorado Encyclopedia. The ...