Gambel oak thickets are a wildfire ladder fuel in Elbert County

Elbert County sits where the open plains start climbing toward pine country, and that edge brings its own fire concern: Gambel oak.

Gambel oak is the scrubby, clumping oak that grows in dense thickets across parts of the county, especially near the pine transition. The Colorado State Forest Service points out that in Douglas and Elbert counties this oak often grows in thick, connected stands that act as “ladder fuels.” That term means the brush can carry a low grass fire upward into the crowns of nearby trees, turning a fast grass fire into a hotter, harder-to-stop one. A grass fire alone moves quickly but low; ladder fuels are what let it climb.

Why this matters around a home: a tidy mowed lawn does not help much if a wall of unmanaged oak sits right against the house or under the trees. The state forest service guidance is to mow or thin Gambel oak in the defensible-space zones around a structure — not just the area right against the house, but typically through the second zone, which can extend to about 100 feet out — and to keep it from forming a continuous bridge from grass to tree.

For how to treat Gambel oak and other fuels around your home, see the Colorado State Forest Service’s Franktown office wildfire mitigation page and Gambel oak management fact sheet, and the Elbert County wildfire page for local programs and contacts.