Definitions for "LADDER FUELS"
Dead or otherwise flammable material that provides a nexus between surface (ground) fuel layers (e.g., grasses) and aerial or canopy (e.g., trees) fuel layers. Ladder fuels are typically composed of immature trees, shrubs, or dead or downed branches.
Fuels that provide vertical continuity between the surface fuels and crown fuels in a forest stand, thus contributing to crown fires.
Fuels that allow a fire to travel from the surface into the crowns of trees or shrubs.