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  2. Tree line - Wikipedia

    en.wikipedia.org/wiki/Tree_line

    The foreground shows the transition from trees to no trees. These trees are stunted in growth and one-sided because of cold and constant wind. The tree line is the edge of a habitat at which trees are capable of growing and beyond which they are not. It is found at high elevations and high latitudes.

  3. Hardiness zone - Wikipedia

    en.wikipedia.org/wiki/Hardiness_zone

    A hardiness zone is a geographic area defined as having a certain average annual minimum temperature, a factor relevant to the survival of many plants. In some systems other statistics are included in the calculations. The original and most widely used system, developed by the United States Department of Agriculture (USDA) as a rough guide for ...

  4. Pecan - Wikipedia

    en.wikipedia.org/wiki/Pecan

    The pecan tree is a large deciduous tree, growing to 20–40 m (66–131 ft) in height, rarely to 44 m (144 ft). [10] It typically has a spread of 12–23 m (39–75 ft) with a trunk up to 2 m (6 ft 7 in) diameter. A 10-year-old sapling grown in optimal conditions will stand about 5 m (16 ft) tall. The leaves are alternate, 30–45 cm (12–18 ...

  5. New plant hardiness zone map to help NC gardeners, farmers ...

    www.aol.com/plant-hardiness-zone-map-help...

    An updated plant hardiness zone map released by the USDA last month shows nearly half of the country is now classified in a "warmer" zone than it used to be. That includes parts of Southeastern N.C.

  6. Taiga - Wikipedia

    en.wikipedia.org/wiki/Taiga

    The principal tree species, depending on the length of the growing season and summer temperatures, vary across the world. The taiga of North America is mostly spruce; Scandinavian and Finnish taiga consists of a mix of spruce , pines and birch ; Russian taiga has spruces, pines and larches depending on the region; and the Eastern Siberian taiga ...

  7. Franklinia - Wikipedia

    en.wikipedia.org/wiki/Franklinia

    Franklinia is a monotypic genus in the tea family, Theaceae. The sole species in this genus is a flowering tree, Franklinia alatamaha, commonly called the Franklin tree, and native to the Altamaha River valley in Georgia in the southeastern United States. It has been extinct in the wild since the early 19th century, but survives as a cultivated ...

  8. Tundra - Wikipedia

    en.wikipedia.org/wiki/Tundra

    11,563,300 [1] km 2 (4,464,600 sq mi) Climate type. ET. In physical geography, tundra (/ ˈtʌndrə, ˈtʊn -/) is a type of biome where tree growth is hindered by frigid temperatures and short growing seasons. There are three regions and associated types of tundra: Arctic tundra, [2] alpine tundra, [2] and Antarctic tundra.

  9. Acer saccharum - Wikipedia

    en.wikipedia.org/wiki/Acer_saccharum

    Acer saccharum, the sugar maple, is a species of flowering plant in the soapberry and lychee family Sapindaceae. It is native to the hardwood forests of eastern Canada and the eastern United States. [3] Sugar maple is best known for being the primary source of maple syrup and for its brightly colored fall foliage. [4]

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