Giant Sequoia Trees

GIANT SEQUOIAS are some of the LARGEST living things on Earth. They grow only in California (in the Sierra Nevada mountains). The biggest, named "GENERAL SHERMAN," is about 275 feet tall (84 meters), 36 feet around at the base, and weighs an estimated 1,400 tons. It's also one of the OLDEST — over 2,000 years old. Some other sequoias may be 3,000+ years old.

How they live so long. (1) THICK BARK: up to 2 feet thick, fire-resistant. Forest fires actually HELP sequoias by clearing competing plants — the thick bark protects them. (2) DEEP ROOT NETWORK that supports the massive weight. (3) RESINS in the wood resist insects and fungi. (4) Their heights let them OUTCOMPETE smaller plants for sunlight. (5) Their seeds need fire heat to crack open and germinate — this evolved after millions of years with regular forest fires.

Threats today. CLIMATE CHANGE brings hotter, more intense fires (not the moderate ones sequoias evolved with). Severe drought weakens trees. Many ancient giants — survivors of 2,000+ years — have been lost in recent fires. Conservation efforts include controlled burns, watering, and protection. Visit Sequoia and Kings Canyon National Parks if you ever can — standing under one of these giants is humbling.

Giant sequoias have stood through Roman empires, the Black Death, the Industrial Revolution, world wars. They are living history. Protecting them protects more than trees — it protects time itself.