Seed transfer guidelines for Douglas-fir in North Idaho

Seed transfer guidelines for Douglas-fir reforestation in Northern Idaho. Includes delineations based on elevation and latitude using current research (1980). Author mentions that there will be some maladaptation in planting even when adhereing to the guidelines, but as more information becomes available through research they can be fine-tuned. Because patterns of variation in Douglas-fir are so high, these guidelines should be followed in plantings.