Douglas Fir, Pseudotsuga menziesii - Tall evergreen tree native to western United States. A magnificent tree with soft, 3/4" to 1 1/4" dark green needles radiating in all directions from the branch. A popular Christmas tree. Susceptible to late spring frost; avoid planting in low areas.  Prefers moist, well-drained soil. Excellent response to shearing, one of the fastest growers. Principal enemies: Rhabdocline and Swiss needlecasts. Grows best in central and southern New Hampshire. Mature height 60 to 80'. Seed Source: San Isabel National Forest, Colorado.