I noted branch dieback on a tree at the University of Maine, Orono (zone 4). Hardness is listed at zone 5 to 8, which is reasonably accurate. distichum, develops chlorosis on high ph soils. I have not observed chlorosis on the species whereas, T. Trees are wind-firm and resistant to breakage. Growth is fast, easily 2 to 3’ per year, for the first 10 years, if provided reasonable care. The species is surprisingly well suited to drier soils once established. Netherlands, I observed an entire street planted with Metasequoia. Extremely tolerant of excess moisture and I observed trees in standing water. Excellent tree along streams and in moist soil areas. Single specimens, grouping and groves inspire. Tree bark glows rich saturated orange-red in the late afternoon winter sun. Though deciduous, the unique branching and bark characteristics provide exquisite winter beauty. The bark is beautiful, rich reddish brown, slightly shedding in thin strips, the trunk with cavities under each branch attachment. The opposite arrangement permits easy separation from Taxodium distichum, common baldcypress, with alternate branches and buds. The needle-bearing branches, oppositely arranged, abscise in toto in fall. Habit is soft, feathery, conical pyramidal, the needles bright green, turning rusty orange to brown in autumn. Considering the narrow gene base (diversity), many unique cultivars have resulted from the original introduction (see cultivars) This is a large tree, easily 70’ by 30’ at maturity. Louis, houses many of the original seedlings and introduced Shaw’s Legacy™ (‘Peter Raven’, notable because of the denser conical pyramidal habit and darker green needles. Seeds and seedlings were distributed to many public gardens and universities with trees now over 100’. The species, Metasequoia glyptostroboides, was considered extinct until rediscovered in the 1940s in China and reintroduced via the efforts of the Arnold Arboretum, Jamaica Plain, Massachusetts. Dirr’s Tree Spotlight September 18th, 2017
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