a Douglas fir needs water co2, stable ground, food (AKA nutrients), and a moist area (This is just a guess )
The roots of a Douglas fir tree absorb water and nutrients
The Latin name for the Douglas Fir is Pseudotsuga . There are a number of varieties that carry the name of Douglas. P.mensiesii is the Oregon Douglas Fir. P. macrocarpa is the Large-coned Douglas Fir. P. japonica is the Japanese Douglas Fir. P.caesia is the Fraser River Douglas Fir and P. glauca is the Blue Douglas Fir. Take your pick. Pseudotsuga means false hemlock.
Douglas Fir grows in in the upper US and Canada.
Cheryl Anne Cobb has written: 'Water relations and the root regeneration response of Douglas-fir' -- subject(s): Douglas fir
"Fir". "Fur" refers to an animals hide or hair.
There are at least five different trees classed as Douglas Firs. Pseudotsuga menziesii the Oregon Douglas Fir. P.macrocarpa the Large Coned Douglas Fir. P.japonica the Japanese Douglas Fir. P. caesia the Fraser River Douglas Fir and P. glauca the Blue Douglas Fir none of them are true firs the difference being that the cones are pendulous and drop intact. Pseudotsuga means pseudo , false, tsuga , hemlock.
A Douglas Fir is in the Pinales Order and the Coniferopyhta Phylum.
Alison Campbell Nicholson has written: 'Water relations, survival and growth of Douglas-fir seedlings at a pinegrass dominated site in the interior Douglas-fir zone of south- central British Columbia' -- subject(s): Douglas fir, Ecology, Growth
Allan Pierce Drew has written: 'Effects of light preconditioning on the seasonal water relations of nursery-grown Douglas-fir' -- subject(s): Douglas fir
Douglas fir
I'm not a million percent sure on this one, but im almost positive a Douglas fir isn't actually a fir at all, if that helps at all