OREGON STATE UNIVERSITY
Washington alder mill
Washington alder mill
Thinned natural alder stand
Thinned natural alder stand
Red alder plantation near St Helens
Red alder plantation near St Helens
Red alder leaves and female "cones"
Red alder leaves and female "cones"
Red alder plantation in the Oregon Coast Range
Red alder plantation in the Oregon Coast Range
Measuring HSC site
Measuring HSC site
Mature, natural alder stand
Mature, natural alder stand
Newly germinated alder plugs
Newly germinated alder plugs

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The Hardwood Silviculture Cooperative (HSC) is a multi-faceted research and education program focused primarily on the silviculture of red alder (Alnus rubra) and mixed stands of red alder and Douglas-fir (Pseudotsuga menziesii).

The Hardwood Silviculture Cooperative (HSC) was first established in 1988 by a small (and visionary) group of public agencies and industries. The HSC has been providing information for foresters interested in hardwood management for over 20 years.

The HSC has the oldest and most extensive red alder growth database in existence. The study design includes thirty-six study installations from Coos Bay, Oregon to Vancouver Island, British Columbia. The goal of the HSC research is simple, to improve the understanding, management, and production of red alder.


At A Glance

HSC 2016 Summer Meeting – Was held in Castle Rock, WA June 16-17, 2016. This meeting was held in conjunction with the Washington hardwood Commission (WHC) Annual Symposium titled “Experience an Alder Day in the Woods” on June 16th. Here, we toured operational, mid-rotation red alder plantations on Weyerhaeuser property in the Kelso & Ryderwood, WA area. Most aspects of operational red alder management were covered but special emphasis was placed on site productivity, site selection, plantation establishment, stand density management, and commercial thinning. The tour was jam packed with information which is nicely assembled into a pdf found at the following: http://wahardwoodscomm.com/2016_AnnualMtg.html. The business meeting on June 17th included a presentation on validation results of the taper equation and discussion on updating the red alder growth and yield model. For the meeting minutes, click here.

Red alder Growth and Yield Model! - After many years of development, the first-of-its-kind red alder plantation growth and yield model has been developed using the ORGANON architecture. In addition, a new user-friendly interface for this model has been created by the Center for Intensive-planted Silviculture (CIPS). Click here for the link to download the model and here for the link to download the model interface.

HSC Winter 2016-2017 Field Work – Interested in what field work and measurements the HSC has this winter? Click here for the schedule.

HSC 2015 Annual Report - a look at current HSC activities (pdf).

Red Alder Symposium -On March 23-25, 2005, the University of Washington hosted a symposium to examine the economic, ecological, and social values of red alder. This link allows viewing of all the presentations.

Symposium Proceedings - Still the most up-to-date and complete resource regarding red alder biology and management - Red alder: a state of knowledge.

HSC Brochure - a brief description of the HSC, its history, objectives, and study designs.