A tree that resembles C. libani subsp. atlantica in all respects except for the distinguishing characteristic of the intense blue-grey colour of its needles. First the trunk is grey and smooth, but rougher in older trees. Later, the bark flakes off in small plates, revealing the reddish brown bark. The branches are fairly loose, but more close than C. libani subsp. atlantica. All lateral branches slant slightly upwards. The twigs are first greyish green to greyish brown but turn grey in the second year. The needles, 2 - 2.5 cm long, grow in bundles of 20 - 40 together. The needles are a striking grey-blue, particularly on young shoots. Upright cones appear in autumn. Young cones are green but turn purplish brown to brown later. This cedar requires ample sun and is highly tolerant of air pollution. Cedrus libani 'Glauca' grows into a large tree that can be used as a solitary in large parks. The tree is still often traded under its old name C. atlantica 'Glauca'.