Yes, redwood trees can grow outside their native range, but only under the right conditions. The two main types—Coast Redwood and Giant Sequoia—naturally thrive in the cool, moist climate of coastal and mountainous California.
They can be successfully planted in other regions with similar conditions, such as mild temperatures, high humidity, and well-drained soil. However, in hot, dry, or extremely cold climates, their growth is often slower or less successful.