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Douglas-firs Pseudotsuga

Every rated Pseudotsuga record is keep-away — 2 of 2 records; none is rated fire-resistant. These counts describe the cited records — 2 records carrying 214 evidence rows from 27 cited sources; they do not make one verdict for the genus.

Keep away

2 species

Douglas fir Keep away Pseudotsuga menziesii Majority — dissent on page · 213 sources Zones 4–4
Rocky Mountain Douglas Fir Keep away Pseudotsuga menziesii v. glauca Limited evidence · 1 source

About douglas-firs

Corpus context. Pseudotsuga is the directory's #510 largest of 550 genus groups: 2 records carrying 214 evidence rows from 27 cited sources, recorded as tree , hardy across USDA zones 4–4. Those are corpus facts, not a whole-genus flammability claim.

More about Pseudotsuga: Wikipedia — external references; not evidence sources.

Where rated douglas-firs grow

Tagged as growing in 21 states.

A public-domain coast Douglas-fir specimen and enlarged cone show the conspicuous three-pointed trident bracts protruding between cone scales. Taxonomy labels Pseudotsuga as distinct from true firs in Abies and spruces in Picea. — **FA Exhibit ID-004.** Douglas-fir is neither: the cone with tongues. Morphology from USFS FEIS PSEMENM and USFS Silvics of North America. Specimen after Sudworth 1908, fig. 36, public domain. Identification only — no flammability claim. Confirm uncertain material with a regional key or a botanist. CC BY 4.0.

The answer for douglas-firs is no. Here is what to plant instead.

Alternatives matched by form and place, each carrying its own evidence.

Alternatives to douglas fir →

See Pseudotsuga on Grow → · JSON