Sequoia giant tree

The giant sequoia (Sequoiadendron giganteum) is the world's largest tree by volume, native to California's Sierra Nevada.

About this subject

The giant sequoia, also known as Sierra redwood, is a coniferous tree in the family Cupressaceae, endemic to the western slopes of the Sierra Nevada range in California, United States. It can reach heights over 90 meters and trunk diameters exceeding 7 meters, making it the planet's largest tree by volume. The most famous specimen, General Sherman, located in Sequoia National Park, has an estimated volume of 1,487 cubic meters and is about 2,200 years old. However, the oldest known giant sequoia, called President, is approximately 3,200 years old. These trees have very thick bark, up to 60 centimeters, rich in tannins that provide resistance to fire and insect attacks. They depend on fire to open their cones and release seeds, a classic adaptation to forest wildfires. Despite their longevity, the species faces threats from climate change, droughts, and fire suppression, which reduce regeneration. An estimated 80,000 individuals remain in their natural habitat, concentrated in 68 groves in the western Sierra Nevada. Ornamental cultivation is common in parks and gardens in temperate climates worldwide, though they grow much smaller outside their native range. Notably, giant sequoias should not be confused with coast redwoods (Sequoia sempervirens), which are taller but have less volume.

Frequently Asked Questions

What is the largest giant sequoia in the world?

The largest giant sequoia by volume is General Sherman in Sequoia National Park, California, with 1,487 m³ volume, 83.8 m height, and 11 m base diameter.

Why are giant sequoias fire-resistant?

They have thick bark (up to 60 cm) rich in tannins, which acts as thermal insulation. Their high crowns also protect them from ground fires.

Where can I see giant sequoias in Brazil?

Planted specimens exist in some parks and botanical gardens, such as the São Paulo Botanical Garden and Campos do Jordão, but they grow much slower and never reach California-like size.