Redwood Tree Pictures and Facts of (Sequoia sempervirens)

Picture of Redwood Trees
Coast Redwood Trees (Sequoia sempervirens)
Picture of Coast Redwood Trees,
(Sequoia sempervirens)
.
Avenue of the Giants, Humboldt Redwoods State Park, California, USA.

The Redwood Tree, (Sequoia sempervirens), also commonly known as Coast Redwood, California Redwood and Giant Redwood, is a Coniferous Evergreen. The wood is classed as Softwood being a coniferous tree, and the common name of Redwood being derived from its reddish wood color. It is the only extant species left in the Sequoia genus, as the others are extinct.

Impressive Super Redwood Trees
  • The Tallest Tree: The tallest trees currently living on Earth are Coast Redwoods, including the tallest tree in the world called "Hyperion", its height is 379.3 feet (115.61 m). It is located in the RNSP (Redwood National and State Parks) along the coast of northern California, USA.
  • Age: The species Sequoia sempervirens can live for a thousand years or more. Some specimens have been found to be over 2000 years old, but are no longer growing as they have died from environmental elements such as wind or fire, or have been cut down for lumber.
  • Largest Trees by Wood Volume: Although not the largest tree on Earth, that record belongs to the sister genus "Giant sequoia" (Sequoiadendron giganteum), the Coast Redwood Trees are in the top 10, with one of the largest trees being a Coast Redwood tree called "Lost Monarch" with a wood volume of 42,378 cubic feet (1,200 m3). Another Coast Redwood called "Del Norte Titan" may be larger with a volume of 37,200 cubic feet (1,050 m3), as there is some debate over the accuracy of the measurements of the "Lost Monarch" Tree as the measurement includes additional clone stems.
Facts about Redwood, (Sequoia sempervirens) species of trees for identification;
  • Species Scientific Name = Sequoia sempervirens
  • Genus Latin Name Pronunciation: "see-KWOY-uh"
  • Genus Latin Name Meaning: Named from the Latin word "sequi" for sequence / following.
  • Species Latin Name Pronunciation: "sem-per-VY-renz"
  • Species Latin Name Meaning: Always green, Evergreen.
  • Species Common Names = Redwood, Coast Redwood, California Redwood, Giant Redwood, Coastal sequoia, Palo Colorado. List of other Sequoia sempervirens Vernacular Names
  • Species Synonyms: Taxodium sempervirens (Basionym).

Redwood Tree Uses

Redwood Tree at Founders Grove California (Sequoia sempervirens)
A Coast Redwood (Sequoia sempervirens)

tree at Founders Grove,
Humboldt Redwoods State Park, California
Lumber

Coast redwood (Sequoia sempervirens) wood lumber is highly valued for its color, strength, weight (light for its strength), and resistance to decay. The wood does not contain as much resin as other conifer trees, making it more resistant to fire than other trees such as Pine.

The Redwood trees are extensively used for lumber production which can be a whole topic on its own, as vast areas with native growing stands were completely logged clear, creating a public outcry to protect the remaining Old Growth Stands. There are now private lands that are managed by commercial logging entities, such as the Pacific Lumber Company, which owned 200,000 acres (810 km2) of forests, primarily new growth redwood.

Redwood loggers
"Redwood Loggers". - Image in Public Domain

Old growth Redwood trees are valuable and almost finite, as some of these trees are well over 1000 years old, about 33 human generations, or 13 human life-spans to put it in to our perspective. With this in mind we need to protect the existing old growth, as it takes these trees so long to get to this state.

The attached post shows an article from treehugger.com, detailing the results from a new paper titled "Rate of tree carbon accumulation increases continuously with tree size", published in the prestigious scientific journal "Nature". The scientists explain how they've found that older trees grow faster (or more) than younger trees. This is an important finding because it goes against a widely held belief that large trees are not as productive as small ones when it comes to taking CO2 out of the atmosphere.

A large mature Redwood tree for example, typically has more leaves, and has to accumulate more wood around its trunk and branches every year than a younger smaller Redwood tree does, thus its photosynthesizing more, and fixing more carbon dioxide. Bear in mind that new wood is grown onto the outside of last years wood, so every year the trunk and branches get thicker, thus the layer of growing wood gets larger every year than what grew the season before (even if the layers stay the same thickness). This can be a clear sign that more CO2 was fixed than the year before. Also consider that some of these large trees are hundreds of years old, and have impressive trunk girth measurements so they have to produce upwards of 40 cubic feet of new wood each year, that's a lot of growth to have to keep up with every year!

Growing Coast Redwood (Sequoia sempervirens)

Hardiness

The Sequoia sempervirens is Hardy down to USDA Zone 7b, cold hardiness limit between -12°C and -6.5°C (10°F and 20°F), in the UK RHS hardiness Zone H5.

Redwood (Sequoia sempervirens) can be grown as a Bonsai Tree.

Ornamental specimen or Landscape Trees

The Coast Redwood is a fast growing tree (it can grow about 3ft in height annually when young), and can be grown as an ornamental specimen with great care in regard to future mature size. Large gardens and parks may be suitable if in the right location, as adequate air moisture is important for a mature tree therefore coastal locations are preferable.

The Coast Redwood tree has been grown successfully in many Costal areas such as Great Britain, Hawaii (middle elevations), Italy, Portugal, a small area in central Mexico (Jilotepec), Hogsback in South Africa, and the southeastern United States from E. Texas to Maryland. There are some Coast Redwoods on Long Island, New York, and they have been living there for over twenty five years and have survived through 2°F (-17°C) winter low temperatures.

The biggest success for the Coast redwood is in New Zealand, where it has naturalized itself, specifically in the Whakarewarewa Forest, Rotorua. The Redwood tree has been growing in New Zealand plantations for over 100 years now, and they tend to have higher growth rates than the trees in their California native home lands. This is mainly due to even rainfall distribution through the year.

The Coast Redwood also does well in the Pacific Northwest (Oregon, Washington, and British Columbia), far north of its northernmost native range in southwestern Oregon.

Native Populations and Locations

The Coast Redwood (Sequoia sempervirens) is native to the USA; SW. Oregon and NW. California, confined to coastal areas (within 35 miles of the ocean) that receive plenty of coastal fog or air saturated with moisture. Native tree stands occur at elevations generally below 1000ft, but sometimes up to 3200ft. The trees are mostly found growing in alluvial soils, where it forms pure Sequoia stands or woodlands with other coniferous trees such as Chamaecyparis lawsoniana, and Pseudotsuga menziesii.

Map of Native Coast Redwood (Sequoia sempervirens) Distribution

The above map shows the native distribution of Coast Redwood tree populations highlighted in the red area. The tree icons represent single isolated trees or groves from the bulk of the population. Distribution data from USGS (1999).

List of Sequoia sempervirens Vernacular Names

English: Coast Redwood, Redwood
Boarisch: Kystenmaamutbaam
български: Гигантска секвоя
català: Sequoia sempervirens
čeština: Sekvoj vždyzelená
српски / srpski: Секвоја
dansk: Rødtræ
Deutsch: Küstenmammutbaum
dolnoserbski: Pśimórski mamutowy bom
eesti: Ranniksekvoia
Ελληνικά: Σεκόια η αειθαλής
español: Secuoya
français: Séquoia à feuilles d'if
hornjoserbsce: Přimórski žerowc
hrvatski: Obalna sekvoja
íslenska: Strandrauðviður
italiano: Sequoia sempreverde
עברית: סקוויה נאה
lietuvių: Visžalė sekvoja
magyar: Örökzöld mamutfenyő
македонски: Секвоја
Nederlands: Kustmammoetboom, kustsequoia
日本語: セコイア
norsk bokmål: Kystsequoia
polski: Sekwoja wieczniezielona
português: Sequoia vermelha
suomi: Punapuu
svenska: Amerikansk sekvoja
Türkçe: Kıyı sekoyası
中文: 加州紅木
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