Subject
- Douglas fir -- Growth24
- Growth (Plants)22
- Douglas fir -- Oregon -- Growth17
- Trees -- Growth16
- Vegetable gardening -- Oregon11
- Plant growth inhibiting substances10
- Plant competition9
- Growth8
- Bones -- Growth7
- Beans -- Growth6
- Conifers -- Oregon -- Growth6
- Old growth forests -- Oregon6
- U.S. International Biological Program. Coniferous Forest Biome6
- Douglas fir5
- Douglas fir -- Coast Ranges -- Growth5
- Douglas fir -- Oregon, Western -- Growth5
- Douglas fir -- Seedlings5
- Fishes -- Growth5
- Plant competition -- Oregon5
- Red alder -- Growth5