Cedrus atlantica ‘Glauca’ (syn. ‘Glauca Group’, Cedrus libani sub. atlantica ‘Glauca’) – This RHS Award of Garden Merit winner is a large specimen tree and not suited to smaller properties. It features short silvery-blue needles and upright female cones up to 4″ long. Blue Atlas Cedar is best grown in full sun with good soil drainage. Grows 60-100′ high by 30′ wide. Hardy to zone 6.
Pseudotsuga menziesii ‘Pendula’ (syn. ‘Glauca Pendula’) – This weeping form of Douglas Fir is more an accent piece than the towering specimen the species is known for. It features bluish-green weeping foliage (that is sweetly fragrant when brushed), a dominant twisted leader and an irregular growth habit. Grows 20-40′ high by 10-16′ wide. Hardy to zone 5.
Pinus sylvestris ‘Aurea’ – The Golden Scots Pine really isn’t that exciting until the cold weather sets it, when the bluish-green foliage shifts to a brilliant gold. It eventually forms a smaller rounded tree and is an RHS Award of Garden Merit winner. A good choice to plant in front of green belts given the winter contrast. Grows 30-45′ high by 12-22′ wide. Zone 3.
Taiwania cryptomerioides - The Chinese Coffin Tree is native to Taiwan, China and Vietnam and is very rare in cultivation. The flat, scale-like blue-green needles are held in long pendulous side branches and very much resemble Cryptomeria. It is the largest conifer species in Asia and is protected in its native habitat. Produces highly aromatic lumber. Grows 100′+ high. Zone 7.
Cunninghamia lanceolata (syn. Cunninghamia lanceolata var. sinensis) – The China Fir is native to Laos, Vietnam and China and features thick leathery needles that spiral around the stem, somewhat resembling a Monkey Puzzle Tree. It eventually produces small rounded female cones at the branch tips. Highly prized for lumber. Grows 40-70′ high by 20′ wide. Zone 7.