North American California Redwood [sequoia sempervirens ( lamb )]have another name called world grandfather and originate in Pacific Ocean bank and coast of California above sea level 700-1000 meters , it is known as precious timber of rapid growing. Belong to single seed in botany. In origin country the height of tree is up to each this seeds, one tree 30 meters high fine form 40 year, 90
cm of foot-paths of chest. Under the growth condition that is suitable for, high growing amount can be up to 90-150
cm year.
The North American California Redwood is the tall and biggest trees in the world, the life-span is long, the trees grew and just enter mature period in 400-500, there is ability of sprouting on the old trees of 700 years, In country of origin there are a lot of 2000 heavy tree . This seeds is suitable for temperate and foggy in the weather , the soil drain off water in the good area and grow well. Besides, this seeds have relatively strong to resist cold, in annual average temperature 1.7-3.3 degree it have better growth, but do not grow better in hot area. Because North American California Redwoods can resist the air pollution and be able to bear the high wind , So it is short and smaller, culture mutation or variety of graceful tree-like are applied to the foreign gardens and beautified extensively after being cultivated . |
