Tree Species

- Aspen

- Balsam Fir

Balsam Fir

Intermediate Treatments

Range of balsam firThe degree to which competing vegetation should be controlled depends on the management objec- tive and type of site. Mixed species stands enhance wildlife habitat and aesthetics and reduce the potential for spruce budworm damage. On wet and moist-wet sites, balsam fir will eventually grow above associated hardwoods, but on moist sites with northern hardwoods, balsam fir will be sup- pressed. Balsam fir responds well to release when trees are still young and vigorous (for example, with current annual height growth of six inches or more, a fairly pointed crown, and smooth bark with raised resin blisters). A single herbicide release or cleaning about eight years after a harvest or when stand height averages 6 to 10 feet will help ensure balsam fir dominance.

Desirable balsam fir stand densities are not known for optimum timber growth in the Lake States, but a stocking chart for even-aged spruce-fir stands from the Northeast offers some guidance (Appen- dix C-1: Stocking chart for even-aged spruce-balsam fir stands).