Oldest Living Tree on Earth: Amazing Facts About Its Age

The oldest verified living individual tree is an unnamed Great Basin bristlecone pine (Pinus longaeva) in California’s White Mountains. It is more than 5,000 years old.

Methuselah, another famous bristlecone pine from the same area, is also more than 4,800 years old. Scientists estimate their ages by studying and matching patterns in annual tree rings.

These trees survive so long partly because they grow very slowly in cold, dry, high-elevation environments. Slow growth produces dense wood, while the harsh conditions can also limit some insects and fungi that damage trees.

One interesting detail is that ancient bristlecone pine tree-ring records have helped scientists study past climates and improve radiocarbon dating.

The practical takeaway is simple: protect ancient trees and their habitats. Even organisms that have survived for thousands of years can still be harmed by environmental change or human activity.