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San Francisco is one of the only major cities on Earth with genuine old-growth forest half an hour away. That is worth knowing before you spend a d...

Redwoods and sequoias are related but not the same tree. Learn which is bigger, which is taller, and four checks that tell them apart without any equipment.

Yes, you can grow a giant sequoia. Here is the hardiness zone, the space it needs, how to germinate seed, growth rate by year, and the root system to plan for.

Discover how old sequoia trees really are, how scientists determine their ages, why estimates changed, and how giant sequoias compare with the world’s oldest trees.

Most trees are anonymous, known only by their species. A few dozen have names, and a handful of those have biographies: a discovery date, a list of...

There are three redwood species, not one. Learn the scientific names, how they are classified, why they are not pines, and how the giant sequoia got its name.

Sequoia National Park and Redwood National Park are 400 miles apart and hold different trees. Here is which park has what, and the biggest tree in each one.

Almost everything written about redwood and sequoia size quotes the record holders. Hyperion at 380 feet. General Sherman at 52,508 cubic feet. Tho...

Giant sequoias grow in about 75 Sierra Nevada groves. Coast redwoods grow in a 450-mile coastal strip. Here is exactly where each one is, and how to visit.

California holds every giant tree record on Earth. Here is where to find the best redwood and giant sequoia groves, what each one offers, and when to go.

The biggest tree in the world depends on how you measure. See the record holders for largest, tallest, widest, and heaviest, with the numbers behind each.

Everything you need to know about giant sequoia trees: scientific names, size records, lifespan, fire adaptations, and the best groves to visit today.