In a coppice-with-standards silvicultural system, a filler is a tree selected to remain uncut while the surrounding brush or smaller trees are harvested. These trees fill the upper canopy and are grown on a longer rotation to produce large-diameter sawlogs, while the understory provides regular yields of firewood or pulp.
Heard on the job
Mark the straightest oaks as fillers and clear out the rest of the hazel understory.
Also heard as
- standard