Plantae > Tracheophyta > Pinopsida > Pinales > Pinaceae > Pseudotsuga > Pseudotsuga macrocarpa

Pseudotsuga macrocarpa (Bigcone Douglas-fir; Large-coned Douglas-fir)

Synonyms:
Language: Chi; Fre; Ger; Rus

Wikipedia Abstract

Pseudotsuga macrocarpa, commonly called the bigcone spruce or bigcone Douglas-fir, is an evergreen conifer native to the mountains of southern California, It is notable for having the largest (by far) cones in its Pseudotsuga genus, hence the name. The tree occurs from the San Rafael Mountains in central Santa Barbara County and the Tehachapi Mountains of southwestern Kern County, south through the Transverse Ranges, to the Cuyamaca Mountains in San Diego County. The tree is shade-tolerant and prefers to grow on slopes.
View Wikipedia Record: Pseudotsuga macrocarpa

Attributes

Air Quality Improvement [1]  Low
Allergen Potential [1]  Medium-Low
Carbon Capture [1]  Medium-Low
Screening - Summer [2]  Moderate
Screening - Winter [2]  Moderate
Shade Percentage [1]  91 %
Temperature Reduction [1]  Medium-High
Wind Reduction [1]  Medium-High
Bloom Period [2]  Early Spring
Drought Tolerance [2]  High
Fire Tolerance [2]  Low
Frost Free Days [2]  6 months 20 days
Fruit/Seed Abundance [2]  Medium
Fruit/Seed Begin [2]  Summer
Fruit/Seed End [2]  Fall
Growth Form [2]  Single Stem
Growth Period [2]  Spring
Growth Rate [2]  Moderate
Leaf Type [3]  Evergreen
Lifespan [2]  Perennial
Propagation [2]  Bare Root, Container, Seed
Root Depth [2]  30 inches (76 cm)
Seed Spread Rate [2]  Slow
Seed Vigor [2]  Medium
Seeds Per [2]  4140 / lb (9127 / kg)
Shape/Orientation [2]  Erect
Specific Gravity [4]  0.48
Structure [3]  Tree
Vegetative Spread Rate [2]  None
Flower Color [2]  Yellow
Foliage Color [2]  Green
Fruit Color [2]  Brown
Fruit Conspicuous [2]  Yes
Height [1]  60 feet (18.3 m)
Width [1]  28 feet (8.4 m)
Hardiness Zone Minimum [1]  USDA Zone: 4 Low Temperature: -30 F° (-34.4 C°) → -20 F° (-28.9 C°)
Hardiness Zone Maximum [1]  USDA Zone: 6 Low Temperature: -10 F° (-23.3 C°) → 0 F° (-17.8 C°)
Light Preference [2]  Full Sun
Soil Acidity [2]  Moderate Acid
Soil Fertility [2]  Infertile
Water Use [1]  Moderate

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
San Dimas Biosphere Reserve 17161 California, United States  

Predators

Adelges cooleyi (Cooley spruce gall adelgid)[5]
Megastigmus spermotrophus[5]
Urocerus gigas[5]

Range Map

External References

USDA Plant Profile

NatureServe Explorer

Citations

Attributes / relations provided by
♦ 1i-Tree Species v. 4.0, developed by the USDA Forest Service's Northern Research Station and SUNY-ESF using the Horticopia, Inc. plant database.
♦ 2USDA Plants Database, U. S. Department of Agriculture
♦ 3Kattge, J. et al. (2011b) TRY - a global database of plant traits Global Change Biology 17:2905-2935
♦ 4Forest Inventory and Analysis DB version 5.1, May 4, 2013, U.S. Forest Service
♦ 5Biological Records Centre Database of Insects and their Food Plants
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0