Bigcone Douglas-fir

Pseudotsuga macrocarpa

Pinaceae · coniferous tree · introduced

Last updated

Plant Profile

Size & Form

Height
75 ft
Growth Rate
Moderate
Size at 20 yr
24 ft
Lifespan
Long-lived

Site Requirements

Light
Full Sun
Soil Drainage
Well Drained
Soil pH
5.0-7.0
Water
Low
Drought Tolerance
High
Hardiness
Zones 7a–8b

Ornamental Interest

Bloom Time
early spring
Origin
southern California, in mountainous areas from Kern County
Watch for this season
RustHigh

Uredinial Stage (Summer)

AphidHigh

Peak Population & Dispersal

Pine needle scaleHigh

Crawler Emergence

Spring Population Buildup

+ 2 more — see full disease and pest lists below

Diseases: Regionally Documented (12)

Pests: Regionally Documented (12)

Phenological Calendar

View full calendar (6 stages)
Stage Typical Window
Bud swell / bud break BBCH 07 Feb 15-Mar 15
New growth flush BBCH 11 Mar 1-Apr 1
Pollen release BBCH 61 Mar 1-Mar 31
Pollen shed complete BBCH 69 Apr 1-Apr 15
Cone development BBCH 71 Jun 1-Aug 31
Cone maturity and seed shed BBCH 85 Sep 1-Nov 30
Data Maturity
Structured Multiple sources. Expert review underway.