Are there any redwood trees outside the U.S.?

If by Redwood, you mean the coastal redwood, native to western California, usually fairly close to the coast, no there are no other places that species is native to other than the USA. read more

Yes, there are hundreds of redwood trees outside of United States. Giant sequoia redwoods and Coastal redwood trees are native to California but their fascination has taken the world since their discovery in the 1860’s the seeds were brought to United Kingdom and Europe and they have graced magnificent castles and gardens all over the continent. read more

The cool, moist air created by the Pacific Ocean keeps the trees continually damp, even during summer droughts. These conditions have existed for some time, as the redwoods go back 20 million years in their present range. Growth Factors Exactly why the redwoods grow so tall is a mystery. Theories continue to develop but proof remains elusive. read more