Sequoiadendron is a genus of trees commonly known as giant sequoias. These trees are native to the western slopes of the Sierra Nevada mountain range in California. They are among the largest and oldest living trees on Earth, with some individuals exceeding 3,000 years in age and reaching heights of over 300 feet. Giant sequoias thrive in specific conditions, preferring well-drained soils and a climate with ample rainfall. Their thick bark provides protection from fire and pests, allowing them to survive in their natural habitat. Conservation efforts are in place to protect these magnificent trees and their ecosystems from threats like climate change and logging.