Appearance
It is a medium-sized coniferous evergreen tree with a conic to ovoid-conic crown. It grows to heights of 10–25 m , and its trunk diameter reaches 0.5 m . The foliage grows in dense sprays, varying from dull gray-green to bright glaucous blue-green in color. The leaves are scale-like, 2–5 mm long, and produced on rounded shoots. The seed cones are globose to oblong, 15–33 mm long, with 6 or 8 scales, green at first, maturing gray or gray-brown about 20–24 months after pollination. The cones remain closed for many years, only opening after the parent tree is killed in a wildfire, thereby allowing the seeds to colonize the bare ground exposed by the fire. The male cones are 3–5 mm long, and release pollen in February–March.
Uses
Arizona Cypress, particularly the strongly glaucous var. ''glabra'', is widely cultivated as an ornamental tree. Unlike Monterey Cypress, it has proved highly resistant to cypress canker, caused by the fungus ''Seiridium cardinale'', and growth is reliable where this disease is prevalent.The cultivars 'Pyramidalis' and 'Blue ice' have gained the Royal Horticultural Society's Award of Garden Merit.
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