Increasing forest health through stand release &
pre-commercial thinning

Increasing forest health through stand release & pre-commercial thinning.

When attempting to establish a new generation of trees, forest owners face two fundamental tasks that can become increasingly tricky: seedling release and pre-commercial thinning.

Seedlings planted after harvest face steep competition for light, nutrients, water, and space from each other, from native understory plants, and from invasive species. As a young stand ages, the trees can begin to compete with one another for the same limited resources. Landowners have a number of options for reducing competition for resources: stand release, when the plantation is young, or pre-commercial thinning, as the plantation ages. NNRG is collaborating with Washington forest owners to test the effectiveness of different seedling release and pre-commercial thinning options. Some projects have been completed, others are underway or will begin in summer 2020.

Click on the links below to see the latest information about each project.

O’Neill Pine

New plantation stand release from competing scotch broom
Young Douglas-fir stand PCT.

 Hanson Family Forest

Young hardwood stand PCT  
Young Douglas-fir/Western redcedar stand release from competing Himalayan blackberry

Additional landowners participating in this project are Capitol Land Trust, and Wild Thyme Farm. 

More information about the projects taking place in partnership with these landowners will be added Summer 2020.

Funding and support for this project comes from Western Sustainable Agriculture Research and Education (Western SARE).

Western Sustainable Agriculture Research and Education is supporting the research and training provided through this project with grant #OW19-350 – Seedling Release and Young-Stand Thinning as a Way to Increase Forest Health and Production