This dense stand of Douglas-fir is currently experiencing an epidemic of dwarf mistletoe, a parasite characterized by its’ tell-tale “witches broom.” Dwarf mistletoe spreads from tree-to-tree by launching its seed --sometimes up to 50 feet-- into a nearby tree. However, seed dispersal more commonly occurs between trees 6-12 feet away *(Hawksworth, et. al., 1992). Non-commercial thinning can help reduce spread of dwarf mistletoe by culling out or killing infected trees. Later, a prescribed fire may be used to decrease fuel load in the area. Left untreated, infected trees will be destroyed by the parasite and timber and scenic values in the area reduced.

*Hawksworth, F.D. and Delbert, W. 1992. Dwarf Mistletoes: Biology, Pathology, and Systematics. United States Department of Agriculture Forest Service Agricultural Handbook 709.

Also see:

Rock Canyon 2 Thinning