Pseudotsuga menziesii (common name Douglas Fir) is native to western North America and central Mexico, and is hardy to Zone 5. It is an important timber tree of the world.
Pseudotsuga menziesii ‘El Dorado’
Pseudotsuga menziesii ‘Fletcheri’
It is a very slow growing conifer. I particularly like its irregular cascading form that is neither globe shaped nor pyramidal. All my plants are more than 20 years old, and are less than 1m high and spread. The nice bluish green foliage is also distinctive. I have planted them in a wide range of shade conditions; from nearly full shade to full sun. They adapt very well surviving in heavy shade condition, and simply adjust the growth rate much slower.
Pseudotsuga menzisii ‘Graceful Grace’
This should be a slow grower (0.2-0.3 m a year). It is supposed to be a graceful and elegant conifer. So far, this baby looks promising.