Sequoia sempervirens or Coastal Redwood is an evergreen, monoecious tree native to Central California to Southern Oregon. These are some of the largest trees in the world today. Trees in nature will reach 300 feet (91.4 m) in height with trunks up to 26 feet (8 m) in diameter. Trees are long lived with a lifespan up to 2,200 years. Leaves are scale-like 0.5-1 inch (1.2-2.5 cm) long and are medium green. Bark is reddish-brown. They are fast growing trees often growing 3-5 feet (0.9-1.5 m) per year. Trees are very easy to grow and make excellant Bonsai subject or container trees. The trees are hardy in California zone 7.
Blooming: The species is monoecious with male and female cones. Our tree has not yet produced cones.
Culture: Sequoia sempervirens needs full sun with a moist to wet soil mix. In the greenhouse, we use a soil mix consisting of 2 parts peat moss to 2 part loam to 1 part sand. The soil mix should be slightly acidic. Plants are kept moist at all times. Since the trees are native to coastal areas, they can withstand very high humidity levels. We fertilize our specimens once a month during the growing season. If they are grown in container, their growth can be slowed by limiting container size and selective pruning. Even with this, they still need to be root pruned or re potted every couple of years. During the winter months, the trees are in cool rooms where the nighttime temperature drops to 48°F (9°C) and the trees will lose all their leaves. Water can be restricted somewhat but the soil should never completely dry out. Propagation: Sequoia Sempervirens is propagated by hardwood and softwood cuttings in spring and from seed.
Propagation: Sequoia sempervirens is propagated by hardwood and softwood cuttings in spring and from seed.
Sequoia sempervirens was featured as Plant of the Week May 15-21, 2009.
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Cal's Plant of the Week was provided as a service by the University of Oklahoma Department of Microbiology & Plant Biology and specifically the late Cal Lemke, who used to be OU's botany greenhouse grower and an avid gardener at home as well. If the above links don't work, then try the overview site. You may also like to look at the thumbnail index. ©1998-2012 All rights reserved.