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| Sequoiadendron giganteum
Giant sequoiaCulture: Culture: The Giant sequoia prefers moist but well drained acidic soils but yet tolerates dry and exposed sites as well as moderate shade. Its natural habitat is at elevations of between 4,500-8,000', and it usually occurs in groves not in association with any other species. The trees are fast growing in youth, slowing down with age. They are one of the longest-lived trees known, with some surviving nearly 4,000 years before being felled or destroyed by lightning. Only Pinus aristata is thought to have a longer life span. This species serves as a source of redwood lumber, making the massive trees highly sought after by timber companies. The inner heartwood is rich in tannins and is highly resistant to decay. Some old naturally felled specimens have persisted up to 10,000 years on the ground according to Donald Peattie. According to Peattie, this magnificent species was unknown to the outside world until 1852, when a California miner stumbled upon the trees while chasing a grizzly bear. While the bear managed to escape, many magnificent specimens were felled by timber companies and individuals hoping to make a fortune. Some of the felled trees smashed into slivers of wood when incorrectly felled or were too large to be moved and sawn for timber. The creation of Sequoia and General Grant National Parks in 1890 reduced logging but did not stop it. Only when a troop of cavalry was assigned by Teddy Roosevelt to guard the giants did their loss stop in the national parks. Giant sequoia is free of serious insect or disease problems. The main natural enemy is lightning which can explode large trunks. Usage: Although best viewed in its natural habitat, this species can be used in large-scale landscapes. Oregon State University has a number of beautiful specimens that dwarf 5-story buildings. In cultivation, the height is not likely to exceed 100' in the moist regions of the West and perhaps 60' in the Eastern US. It could be used in large open parks. |
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