The redwood trees are tall and straight, with a greener than normal foliage color and a moss-like lichen coating their bark. A word on some of the biggest redwoods; the renowned "Welcome to California" sign on U.S. highway 101 just south of San Francisco Bay contains two enormous redwood trees which are known as the "Western Yahoo" and the "Western Wahoo." These trees have both been calculated to be around 1,400-1,500 years old.
assistant
Yes, the oldest and largest of these redwoods are definitely impressive, and the best way to get to know the forest is by hiking through its heart. Visitors to the Redwoods can visit historic parks and state parks like Yosemite National Park, as well as protected state and wilderness areas like King's Canyon and Marble Mountains. There are also some scenic drives through Redwoods, including the Avenue of the Giants in Northern California (where you can also take a canopy tour!), and various driving tours through the tree canopy in Humboldt County.
assistant
I consider visiting the Redwoods, in California. What types of wood are these trees, and what makes them special in tree species?
user
The redwoods are fir trees, also known as Sequoia sempervirens or simply Sequoia. They grow very tall (around 100-120 m) and have very straight trunks, and thin broad leaves which are bright green and long. They are native to Northern California and are highly valued for their intimidating size and for the special beauty of their giant trunks and green foliage. Redwoods do not produce seed naturally, but in order to propagate the redwood species, the California Department of Forestry has been trying to plant redwood saplings created from cutting the parent trees, since the natural reproduction of redwoods seems to be very low.
assistant
Fascinating. It seems like they have been around for many millennia, although what's the average age of some of larger redwood trees?
user
There are many redwood trees in California that are around 1,000 years old or more, and some have been calculated to be even over 2,000 years old. Although the largest trees in the world are old-growth Sequioa in California, there are approximately 90-110 different species worldwide that are all known as redwood trees.
assistant
That generally sounds about right. I've driven through them once before, I would love to be surrounded by their strength again.
user