A Great Basin bristlecone pine known as Methuselah has lived for 4,668 years — the oldest known living non-clonal tree on Earth.
Quick answer: 1. Prometheus (WPN-114), 2. Methuselah, 3. Gran Abuelo (Alerce Milenario), 4. CBR26, 5. D-21, 6. SHP 7, 7. CB 90 11, 8. CB 90 9, 9. Llangernyw Yew, 10. Old Tjikko.
Some trees have stood for millennia, their annual rings preserving a record of climate, fire, and human history that stretches back to the Bronze Age. The oldest verified individual trees — non-clonal organisms where a single trunk has persisted through the centuries — are found in the harshest environments: high-altitude bristlecone pine forests of the western United States and the temperate rainforests of Chile. This list ranks the ten oldest individual (non-clonal) trees whose ages have been verified through dendrochronology — the science of counting and cross-referencing tree rings. Clonal colonies like Pando, whose root systems can be tens of thousands of years old, are excluded because the individual trunks are much younger.
The oldest known non-clonal tree ever recorded, a Great Basin bristlecone pine that germinated around 2936 BCE. It was cut down in 1964 by a graduate student who was unaware of its age. Tree-ring cross-dating revealed 4,960 rings, confirming its age. It stood on Wheeler Peak in Nevada, United States.
Methuselah is the oldest known living non-clonal tree in the world, a Great Basin bristlecone pine that germinated around 2644 BCE. Its exact location in the White Mountains of California is kept secret by the US Forest Service to protect it from vandalism. Its age was confirmed through dendrochronological cross-dating.
The Gran Abuelo, or Great-Grandfather, is a Patagonian cypress in the Alerce Costero National Park of Chile. Its tree-ring count of 3,655 years makes it the oldest living tree in South America and the oldest living non-bristlecone tree in the world. An unconfirmed 2022 estimate suggested it could be up to 5,484 years old.
A dead giant sequoia in California's Sierra Nevada whose tree-ring count of 3,266 years makes it the oldest known giant sequoia ever recorded. Giant sequoias are the most massive trees on Earth by volume, but their maximum age is lower than that of bristlecone pines.
A giant sequoia in the Sierra Nevada with a verified age of 3,220 years from cross-dated tree rings. Like the older CBR26, this specimen shows that giant sequoias can live for well over three millennia under the right conditions.
A Great Basin bristlecone pine in California's White Mountains with a verified age of 3,013 years from cross-dated ring samples. This tree is part of the same ancient bristlecone population as Methuselah.
A giant sequoia in the Sierra Nevada with a verified age of 2,910 years. This tree helped establish that giant sequoias can reliably reach ages of 3,000 years, making them the second-oldest tree species by verified maximum age.
A giant sequoia with a verified age of 2,900 years, closely related to the CB 90 11 specimen. Both were sampled as part of comprehensive dendrochronological studies of giant sequoia populations in the Sierra Nevada.
An ancient yew tree in the churchyard of St Dygain's Church in Llangernyw, Wales, estimated to be between 4,000 and 5,000 years old. However, its exact age cannot be confirmed through dendrochronology because yew trees develop hollow trunks, making complete ring counts impossible. The most conservative verified estimate places it at approximately 1,500 years based on partial ring counts and growth-rate estimates.
A Norway spruce on Fulufjället Mountain in Sweden with a root system radiocarbon-dated to 9,550 years makes it part of a clonal colony. However, the individual trunk visible above ground is much younger, with dendrochronology dating the oldest visible trunk segment to approximately 600 years. It is listed here for its significance as a spruce — the longest-lived known spruce tree by trunk age.
| # | Name | Age | Species | Scientific name | Location | Status |
|---|---|---|---|---|---|---|
| 1 | Prometheus (WPN-114) | 4,960 years | Great Basin bristlecone pine | Pinus longaeva | Wheeler Peak, Nevada, United States | Cut down (1964) |
| 2 | Methuselah | 4,668 years | Great Basin bristlecone pine | Pinus longaeva | White Mountains, California, United States | Alive (location secret) |
| 3 | Gran Abuelo (Alerce Milenario) | 3,655 years | Patagonian cypress | Fitzroya cupressoides | Cordillera Pelada, Los Ríos, Chile | Alive |
| 4 | CBR26 | 3,266 years | Giant sequoia | Sequoiadendron giganteum | Sierra Nevada, California, United States | Dead |
| 5 | D-21 | 3,220 years | Giant sequoia | Sequoiadendron giganteum | Sierra Nevada, California, United States | Alive |
| 6 | SHP 7 | 3,013 years | Great Basin bristlecone pine | Pinus longaeva | White Mountains, California, United States | Alive |
| 7 | CB 90 11 | 2,910 years | Giant sequoia | Sequoiadendron giganteum | Sierra Nevada, California, United States | Alive |
| 8 | CB 90 9 | 2,900 years | Giant sequoia | Sequoiadendron giganteum | Sierra Nevada, California, United States | Alive |
| 9 | Llangernyw Yew | ~1,500 years (verified partial count) | European yew | Taxus baccata | Llangernyw, Conwy, Wales | Alive |
| 10 | Old Tjikko | 600 years (trunk); 9,550 years (root system) | Norway spruce | Picea abies | Dalarna, Sweden | Alive |
Trees are ranked by their verified age in years, determined through dendrochronological cross-dating of tree-ring core samples. Only non-clonal individual trees with ages verified through reproducible scientific analysis are included. Ages are the minimum verified age (the oldest wood that could be reliably dated); many trees may be older than their listed age if the centre of the trunk has rotted away. Clonal colonies and estimated ages without cross-dating are excluded. Rank 1 is the oldest tree. Data is drawn from Wikipedia's List of oldest trees, the Rocky Mountain Tree-Ring Research database, and published scientific papers.
Methuselah, a Great Basin bristlecone pine in California's White Mountains, is the oldest known living non-clonal tree at 4,668 years. Its exact location is kept secret to protect it.
Prometheus (WPN-114), another Great Basin bristlecone pine, was 4,960 years old when it was cut down in 1964. It was the oldest known non-clonal tree ever recorded.
Bristlecone pines grow at high elevations (3,000 m+) in dry, rocky, windswept environments where competition is minimal and disease is rare. Their dense, resinous wood resists rot and insect damage, allowing them to survive for millennia.
Pando, a clonal colony of quaking aspen in Utah, has a root system estimated at 16,000 to 37,000 years old, making it one of the oldest living organisms. However, individual aspen trunks in the colony are rarely more than 130 years old, so it is not a single tree in the traditional sense.
The most accurate method is dendrochronology — counting and cross-referencing annual tree rings from core samples. For trees with hollow trunks, radiocarbon dating of wood samples can provide age estimates, though these are less precise.