Coniferophyta. Pinus longaeva (Bristlecone pine) lives in the White Mountains of California, and can reach ages of more than 4,600 years. This Sequoia giganteum (Giant Sequoia) weighs about 2,500 metric tons (about 24 blue whales, or 40,000 people). The related Sequoia sempervirens (Coast Redwood) can grow to more than 110 meters, 1/4 the height of the Sears tower.