Big-cone douglas-fir (Pseudotsuga macrocarpa)

Big-cone douglas-fir

Also known as: Large-coned douglas fir, Hemlock

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.

Scientific classification

Species

Big-cone douglas-fir (Pseudotsuga macrocarpa)

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Perennial

Lifespan

Tree

Plant Type

11 m to 22 m

Plant Height

Evergreen

Leaf type

5 - 32 ℃

Ideal Temperature

Spring

Growth Season

Images of Big-cone douglas-fir

Attributes of Big-cone douglas-fir

Growth Rate

During spring, big-cone douglas-fir's moderate growth rate manifests in a steady increase in height and foliage density. Collector's observe noticeably thicker bark and branching patterns as the season progresses. However, this growth rate declines in other seasons, particularly during winter.

Distribution of Big-cone douglas-fir

Distribution Map

Big-cone douglas-fir, a conifer species, is originally rooted in the mountain ranges of a major region in North America. Its presence, however, has crossed natural borders, finding a new foothold in regions of the largest continent in the Eastern Hemisphere, particularly in temperate zones.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Dry slopes & canyons from 2000-6000 ft

Care Guide for Big-cone douglas-fir

Every week

Water

Full sun

Sunlight

5 - 32 ℃

Ideal Temperature

Water: Originating from arid regions, big-cone douglas-fir thrives with minimal moisture, exhibiting high drought tolerance. It requires weekly watering for health and is best suited for outdoor landscapes focused on water conservation, enduring low rainfall periods effectively.

Fertilize: Fertilize big-cone douglas-fir with balanced, slow-release fertilizers every 2-3 months during growing seasons. Reduce fertilization in winter and apply gloves during the process. Water big-cone douglas-fir after fertilization to enhance nutrient uptake, ensuring consistent plant health and vitality throughout the year.

Pruning: Big-cone douglas-fir flourishes with winter pruning, particularly from early to late winter. Remove dead or diseased branches to enhance growth and thin overcrowded areas for better air circulation. Consistent pruning promotes structural integrity and health; always utilize clean, sharp tools for precise cuts.

Propagation: Big-cone douglas-fir propagates effectively through semi-hardwood cuttings taken during active growth. Apply rooting hormone to the cuttings, place them in well-draining medium, and maintain consistent moisture without waterlogging. Indirect light helps promote new shoot growth for successful establishment of big-cone douglas-fir.

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