

Douglas firs, also known as Oregon pines
Douglas firs requires well-drained soil and full sunlight for optimal growth. Regular watering is essential, especially in the first few years to establish strong roots. Special care should be given to mulching around the base to retain moisture and prevent weeds.
Watering schedule: Every 1-2 weeks
Sunlight Requirements: Full sun
Care Difficulty | Easy |
Lifespan | Perennial |
Watering Schedule | Every 1-2 weeks |
Sunlight Requirements | Full sun |
Soil Type | Garden Soil |
Soil pH | 6-6.5 |
Hardiness Zones |
5-7
|
The Common douglas-fir is named after Scottish botanist David Douglas, who discovered it. Small mammals rely heavily on the seeds for nutrition. Many Native American tribes utilized the bark, resin, and pine needles to prepare herbal remedies for various ailments. Common douglas-fir is often used in heavy timber buildings due to its sturdy wood.
Pseudotsuga macrocarpa typically grows from 15 to 30 m in height and 50 to 150 cm in trunk diameter. The growth form is straight, with a conical crown from 12 to 30 m broad. The bark is deeply ridged, composed of thin, woodlike plates separating heavy layers of cork. The leaves are needle-like.
Chinese douglas-fir is a coniferous tree notable for its tall, straight growth, often reaching imposing heights in its native mountainous habitats. The foliage resembles soft, elongated needles, while the cones feature a distinctive three-pointed bract that protrudes from the scales, giving them a unique appearance. These physical traits not only aid in identification but also reflect chinese douglas-fir's adaptability to its environment, enabling efficient seed dispersal and sunlight capture.
Rocky mountain douglas-fir is a majestic conifer, characterized by its towering height and robust, conical shape. Its bluish-green needles, which emit a distinct aroma when crushed, contribute to the plant's overall beauty. The bark of rocky mountain douglas-fir is deeply furrowed, providing resilience against forest fires. Adapted to mountainous environments, rocky mountain douglas-fir thrives in well-drained soils, where it plays a pivotal role in its ecosystem as both a timber source and wildlife habitat.
Douglas-fir is a majestic conifer with thick, fissured bark and a towering stature, often reaching over 200 feet. Its flat, linear leaves and distinctive cones, characterized by a protruding bract, inhabit dense, evergreen forests where it thrives in cool, moist climate conditions. The robust, pyramidal shape of young douglas-fir gives way to a more irregular, broader form in maturity, indicative of its adaptability and strength.
Common issues for Douglas firs based on 10 million real cases