Pseudotsuga menziesii

Tracheophyta PinopsidaPinaceaePseudotsugaPseudotsuga menziesii


A very tall evergreen tree of plantations and policy woodlands, usually planted in sheltered, well-drained sites; also found in parks and large gardens as a specimen tree. Seed production in Britain is erratic, with long gaps between mast years, but natural regeneration occurs fairly widely. Generally lowland, but upper altitudinal limit unknown.



World Distribution

Native of western N. America; very widely planted in Europe and elsewhere.

Broad Habitats

Light (Ellenberg): 6

Moisture (Ellenberg): 6

Reaction (Ellenberg): 4

Nitrogen (Ellenberg): 4

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.4

July Mean Temperature (Celsius): 15

Annual Precipitation (mm): 1035

Height (cm): 5800

Perennation - primary


Life Form - primary

Mega-, meso- and microphanerophyte



Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 900

Count of 10km squares in Ireland: 13

Count of 10km squares in the Channel Isles: 0

Weighted Changed Factor: 67

Weighted Change Factor Confidence (90%)


JNCC Designations


Atlas text references

FNAEC (1993b)
James NDG
1982.  The Forester's Companion.
Mitchell (1972
Nixon CJ, Worrell R
1999.  The potential for natural regeneration of conifers in Britain. Forestry Commission Bulletin no. 120.