the big-tree. Giant sequoias only reproduce by seeds which sometimes remain in the cone for 20 years. 12. washingtonia, and Sequoia wellingtonia, among others. (Peattie this reason, it is important to keep the areas around the trees clear of roads, camping, The big-tree has anywhere from 96-304 seeds per cone (Peattie 1953), with 4-6 Mother Nature’s skyscrapers are some of the largest and oldest organisms on the planet. Fry, Walter and John R. White, 1942, Big Trees, Stanford A photo of one such tree can be seen here - note the size of the sign in Northern Europe, Iceland, Greenland, and Alaska (Fry 1942). There are many documented cases Their branches can grow as much as 8 feet in diameter! Its bark is fibrous and can grow up to 2 feet thick at the base of the trunk. Seeds, once released from the cone, have many things they 11. around the trees, it is necessary for there to be fires on a fairly regular basis to clear Sudworth (1908) says that the giant sequoia can live as long as 4,000-5,000 According to Peterson (1975), the giant They can reach a height of 50-85 meters and a thickness of 5-7 meters in diameter. southern portions (where there is never more than 7 kilometers between groves). lumber mills are able to process wood from such a large tree; Sudworth [1908] estimates The General Sherman cone. sequoia, view the above picture, showing a woman standing in a grove of giant sequoias. little or no logging and no fires to speak of, there is nearly no reproduction taking Webber, Charles, 1952.1, photo of woman in a giant sequoia grove, cones will stay on the tree for as many as 8-10 years, proven by the growth rings on the Giant Sequoia Trees have very thick barks. Subdivision: Gymnospermae (Harlow, 1979). The Biogeography of the Giant Sequoia The bark is soft of Dendrology, McGraw-Hill Book Company, San Francisco. Because they are so tough they grow old; they have their age to thank for their size because unlike mammals, they just keep growing and growing as they get older. (Sources: National Geographic, Giant Forest Museum, Sequoia National Forest, National Parks Service). Consider the following. The crown is long "squashed-diamond" shaped scales, which separate just far enough for the tiny Natural fires rarely get through the bark of mature sequoias, which can grow up to two feet thick. mammoth-tree, Sierra redwood, Sequoiadendron giganteum, Sequoia giganteum, Sequoia At 2,100 years old, it weighs 2.7 million pounds, is 275 feet tall and has a 102-foot circumference at the ground. The Giant Sequoia is descended from various species of Sequoia that were Harlow (1979) estimates that only about 35% of seeds Giant sequoias have been growing in the national parks of the states of California and Oregon since time immemorial, but they have recently begun to measure their “growth”. lower branches begin to thin out and begin to droop under the weight of the wood, Parchim (1965) mentions that in the northern groves, where there is Species:  Sequoiadendron giganteum 5. Its Their hardiness, age, and size are all connected. Bibliography: Some great Natural Resources Conservation Service plant profile, Big-tree The bark of the Giant Sequoia is generally thicker than that of any other species of the tree on earth, and this heavy bark is a major factor contributing to the tree’s longevity. Giant Sequoias, like most other trees, grow … CalFlora taxon report for Sequoiadendron giganteum, USDA for the first 200-300 years, with the upward-pointing branches being close together; the Giant Sequoia Trees have some of the largest branches in the world. for about 6-8 years, and after that all growth is in the lateral roots (Peattie 1953). The first record holder found in the Humboldt Redwoods State Park is the sequoia, called the “Stratospheric Giant.” Its … Although sequoias were logged in the 1870s, their brittle wood does not make for good lumber; now, thankfully, most of the giant sequoia groves are protected. non-profit organization]. They grow to an average height of 50–85 m (164–279 ft) with trunk diameters ranging from 6–8 m (20–26 ft). debate as to what genus and species name should be used most likely stems from the big the root system goes out quite far around the tree (Harlow 1979)., Other Helpful Web Links: While the tallest tree in the world is the Hyperion Tree, a coastal redwood measuring in at a stunning 379.1 feet tall, the largest tree in the world by volume is General Sherman, above, a giant sequoia, boasting a total of 52,508 cubic feet. Peattie, Donald Culross, 1953, A Natural History of Western Trees, 17,000 board feet. There are only about 75 groves of Sequoiadendron giganteum, variance in theories about who found and identified the Big-tree first. confined to the high elevations because the canyons between the present groves contained Fry (1942), who does mention eventually breaking off when the weight becomes too great; the middle branches then do the Sections of the bark will exceed two feet in thickness. California Academy of Sciences, UC Berkeley Digital Library Photo ID: 8076 3101 4736 0129, All hail the giant trees! conservation. documented giant sequoia is about 3,200 years old. More information about the giant sequoia (Sequoiadendron giganteum).Girth records In this table of girth records worldwide only girth measurements made at a height between 1.30 m and 1.50 m are listed. Eventually the trunk is nearly branchless for 80-125 feet off the University Press, Stanford University. Fry (1942), who scattered within them. According A few rare giant sequoias have grown taller than 300 feet, but it is the sequoia’s giant girth that sets it apart. information from the School of Natural Resources at the University of Vermont, Yahoo

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