Sequoiadendron giganteum (Sierra Redwood)
Botanical Information
| Family | Taxodiaceae |
| Genus | Sequoiadendron |
| Species | giganteum |
| Category | Woody |
| Type | Tree (evergreen) |
| Origin | Western United States of America. |
| Pronunciation |
Details
| USDA Hardiness Zone | 7a |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | 8 |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H5 |
| RHS Hardiness Ref. | |
| Temperature (°C) | -21 - (-15) |
| Temperature (°F) | -5 - 5 |
| Height | 20 - 100 m |
| Spread | 5 - 30 m |
| Growth | Fast |
| Flowering Period | April |
Description and Growing Information
| Landscape | Use as a specimen conifer where there is room for it to ascend and spread. |
| Propagation | By seed requiring no pre-treatment. |
| Pests | No serious pests or diseases of note. |
| Notable Specimens | Niagara Parks Botanical Gardens, Niagara Falls, Ontario, Canada. Van Dusen Botanical Garden, Vancouver, British Columbia, Canada. Stourhead Gardens, Wiltshire, United Kingdom. Wakehurst Place, Ardingly, Haywards Heath, Sussex, England. |
| Habitat | Dense and pyramidal-oval in youth, losing its lower branches with a narrow- pyramidal crown of foliage. |
| Bark/Stem Description | Spongy in texture and rich reddish brown, quite thick as a form of protection against fire. |
| Leaf Description | Blue-green needles vary in length from 2 -10 mm and are usually awl shaped, triangular in cross section, tapering from the base to a fine point. They point forward toward the apex, covering the stem longitudinally in 3 spiralling rows. |
| Flower Description | Male flowers are axillary and terminal with numerous spirally arranged stamens; female flowers are terminal with 15 - 20 peltate scales. |
| Texture Description | Medium textured. |
Photographs
Sequoiadendron giganteum, form. Wakehurst Place, Ardingly, Haywards Heath, Sussex, England. 25/10/2019.
Sequoiadendron giganteum, leaf. Wakehurst Place, Ardingly, Haywards Heath, Sussex, England. 25/10/2019.
sequidendron giganteum, form. Stourhead Gardens, Wiltshire, United Kingdom. 19/10/2019.
Sequoiadendron giganteum 'Pendulum'.
Sequoiadendron giganteum 'Blauer Eichzwerg'.
Sequoiadendron giganteum 'Hazel Smith'.
Sequoiadendron giganteum 'Wellingtonia'.
Awards
