Hardy to USDA Zone 4 - cold hardiness limit between -30° and -20☏ (-34.3° and -28.9☌). It is also found in eastern Sichuan, southwestern Hubei, and northwestern Hunan provinces, at 2,400 to 4,800 feet (750 - 1,500 m) elevation, where it is typically found on shady, moist sites such as ravines and stream banks.
30☁0'N, 108☄5'E, with an outlying occurrence in northwestern Hunan province at elevations of 2,400 to 4,800 feet (750 - 1,500 m) above sea level. Its primary occurrence is near the Sichuan-Hubei border, ca. Seed cones are short and cylindrical, up to 0.8 to 1 inch (20 - 25 mm) long, terminal, solitary and pendulous on sparsely leaved lateral branchlets.ĭistribution.It is the biggest, strongest, straightest tree for many days of travel, a Sichuan villager told a visitor in March 1948. In autumn, the leaves turn reddish-brown before they are shed with the deciduous branchlets. At an average 100 feet high, Metasequoia is imposing next to the chestnut, oak, and maple trees with which it was found to coexist in China. The upper surface is bright green, with a narrowly grooved midvein, the under surface bearing obscure lines of stomata, lighter green or slightly glaucous, the midrib slightly raised. Leaves (needles) are linear, flattened, straight or slightly curved, about 0.5 inch (12 mm) long and 0.06 inch (1.6 mm broad on mature trees, but on seedlings and young trees are generally 1 to 1.25 inches (24 - 32 mm), sometimes up to 2.5 inches (64 mm) long.The green deciduous branchlets grow up to about 3 inches (7.5 cm) long, often longer on young trees. The persistent bright, reddish-brown when young, shallowly ridged, carrying the deciduous branchlets, numerous vegetative buds and a few leaves. Branchlets are glabrous, of two kinds, persistent and deciduous. Bark is reddish-brown when young, becoming darker, greyish, fissured, exfoliating in long, narrow strips.Its crown is conical when young, broad and rounded with age. Dawn redwood is a deciduous coniferous species of tree which will quickly grow to mature heights of 145 feet (45 m) tall, with a tapering trunk broadening to the buttressed base. Additions to the International Conifer Registerĭescription.
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