Coastal Redwood tree seedling - Sequoia sempervirens - Medium. Medium Coastal Redwood seedling (Sequoia sempervirens) 5”-10” tall. Grown on the north coast of California in the heart of the redwoods by a father and daughter team and is ready for you to add to your house, property, or gift to someone special. Photos are of one of our seedlings and a example of the one that you will receive.