Index / Search / Pseudotsuga menziesii var. glauca

§1 Plant

Pseudotsuga menziesii (Mirb.) Franco var. glauca (Beissn.) Franco

vernacular Rocky Mountain Douglas-fir — variety · Pinaceae


USDA
PSMEG
GBIF
2685825
Rank
variety
Rocky Mountain Douglas-fir (Pseudotsuga menziesii var. glauca)
Platephotograph · Tracy S.CC BY-NC source · iNaturalist ↗

§2Habit & range

Habit and range

Growth habit
Tree
Duration
Perennial
Group
Gymnosperm
Family
Pinaceae Spreng. ex Rudolphi
Genus
Pseudotsuga
§2a

Native status, by region

  • CAN Canada Native
  • L48 Lower 48 States Native
§2b

County-level range

· 57 counties across 7 states/territories
Legend Native · 57 Introduced · 0 Both · 0 Hover a county for detail.

§3Cultivation specs · USDA

Recorded by the USDA Plant Materials Program.

§3a

Tolerances

Drought
High
Shade
Medium
Moisture use
Medium
Fire
None
Salinity
None
Anaerobic
Low
CaCO₃
Medium
Hedging
None
§3b

Climate & soil

Cold tolerance
-32 °F minimum
Frost-free days
65 min.
Precipitation
22–45 in/yr
pH range
5.9–7.2
Root depth
26 in min.
Fertility need
Medium
Soil texture
coarse, medium
§3c

Form & growth

Growth form
Single Stem
Growth rate
Moderate
Lifespan
Long
Mature height
110 ft
Height @ 20 y
25 ft
Foliage texture
Medium
Foliage colour
Green
Porosity (summer)
Dense
Porosity (winter)
Dense
Flower colour
Yellow
Fruit colour
Brown
Fire resistant
No
N fixation
None
Toxicity
None
§3d

Reproduction

Bloom period
Mid Spring
Seed abundance
High
Seed begins
Summer
Seed ends
Fall
Spread rate
Slow
Stratify
Yes
Seeds / lb
38,080
Propagation
seed, bare root, container
§3e

Use & availability

Commercial availability
Contracting Only
Nursery stock
No
Browse palatability
Low
Graze palatability
Low
Palatable, human
No
Lumber
Yes
Fuelwood
Medium
Christmas tree
No

§4Counties, by state

Recorded in 57 counties across 7 states/territories.


§5Sources & provenance

USDA PLANTS

Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.

plants.usda.gov/PSMEG ↗

GBIF Backbone

Canonical taxonomic identity, synonym resolution, cross-refs. CC0.

gbif.org/species/2685825 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-26

fetched 2026-05-26T10:50:45Z