Cedrus

Atlas cedar is a large, long-lived evergreen conifer native to the Rif and Atlas Mountains of Morocco and the Tell Atlas of Algeria, where it forms forests at 1,170-2,200 m elevation (Wikipedia). In cultivation it develops a stately, broadly conical to flat-topped crown with silver-blue to grey-green needles, reaching 30-35 m tall - a genuinely majestic specimen tree for large gardens and parkland. The honest catch is scale: this is not a suburban garden tree. It grows too large for most plots, casts dense, permanent shade beneath its canopy, and drops barrel-shaped cones that can be heavy and messy. Surface roots lift paving and outcompete underplanting once the tree matures.

A graceful, large evergreen conifer from the western Himalayas, prized as a specimen for its broadly pyramidal form, gently nodding leader, and sweeping branches whose tips droop in soft, weeping curtains. Slender blue-green to gray-green needles are borne in dense whorled clusters on short spurs, and barrel-shaped upright cones sit on the upper branches, ripening from blue-green to reddish-brown and disintegrating on the tree. In the landscape it typically reaches 30-50 feet (with much greater potential in age and ideal sites), needs real room to spread, and is the most heat- and warmth-tolerant of the true cedars — thriving in zones 7-9 where spruce and fir falter, but it does want good drainage and is not a small-garden tree.