This is Cupressus cashmeriana, also known as Bhutan cypress, Kashmir cypress, and weeping cypress. This gorgeous tree from Tibet grows anywhere from 40 to 140 feet tall and the greenish blue foliage is stunning. This is the official national tree of Bhutan and has been associated with Buddhism and Buddhist places. This weeping cypress likes to grow in full sun. This tree is a larval host plant for the Muirs Hairstreak butterfly. USDA Hardiness Zones 9 to 11.