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Unlike the closely related western red cedar (Thuja plicata), northern white cedar is only a small or medium-sized tree, growing to a height of 15 m (49 ft) tall with a 0.9 m (3.0 ft) trunk diameter, exceptionally to 38 metres (125 ft) tall and 1.8 metres (5.9 ft) diameter. [7] The tree is often stunted or prostrate in less favorable locations.
Melia azedarach, commonly known as the chinaberry tree, [3] pride of India, [4] bead-tree, Cape lilac, [3] syringa berrytree, [3] Persian lilac, [3] Indian lilac, or white cedar, [5] is a species of deciduous tree in the mahogany family, Meliaceae, that is native to Indomalaya and Australasia.
[2] [3] [7] [8] The tree begins bearing seeds at 4–5 years, but does not reach full maturity and start producing cones until it is 10-20 years old. Seeds are dispersed nearly every year and travel by wind. [11] Height and diameter of the tree increase steadily until the tree is 50 years old, at which point height growth slows.
T. plicata is an important tree to the First Nations people of the Pacific Northwest and is sometimes called "Canoe Tree" because of its use as a material for Native American canoes. [citation needed] Oil of Thuja contains the terpene thujone which has been studied for its GABA receptor antagonizing effects, with potentially lethal properties. [26]
When stocking, a tree's basal area is measured. The basal area is a cross-sectional area of the stump taken about 4.5 feet (1.4 m) above the ground. [7] The equation for calculating the basal area of trees in a stand is Basal Area = 0.005454 DBH 2, where DBH is the diameter of the tree at the aforementioned measuring height. [7]
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By contrast, the (roughly) 300-year-old Ice Glen pine in Stockbridge, Massachusetts shows approximately half the annual growth rate of trees in the 90- to 180-year age range, averaging just 5.8 cubic feet (0.16 m 3) per year over a five-year monitoring period. Volume increased as a result of increases in both height and girth.
White cedar may refer to several different trees: Bignoniaceae. Tabebuia heterophylla - native to Caribbean islands and also cultivated as an ornamental tree; Cupressaceae: Chamaecyparis thyoides – Atlantic white cypress; Cupressus lusitanica – Mexican white cedar; Thuja occidentalis – Eastern arborvitae; Meliaceae: