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There is no scientifically settled ranking of the world’s oldest living trees: the answer depends on whether “tree” means one individual trunk or a clone with a shared root system, and on how its age was established. The strongest evidence for an individual tree comes from ring counting and cross-dating; many celebrated ancient trees instead have estimated or disputed ages.
Below are ten leading candidates, with their ages and evidence labeled so readers can compare them without mistaking estimates for proven rankings.
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How scientists determine a tree’s age
For an individual tree, dendrochronology—counting annual growth rings and matching their patterns with rings from other trees—is generally the most precise method. Cross-dating can establish the calendar year of each ring.
Ancient trees may be hollow, damaged, or made up of several stems, and a core sample may miss the oldest wood. Age estimates based on trunk circumference are much less precise because growth varies with species, climate, soil, competition, and damage. The National Institute of Standards and Technology and the U.S. Forest Service’s OLDLIST research explain the distinction between measured ages and rough estimates.
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Clonal organisms pose a different question: their stems can die and regrow while an ancient root system persists. In that case, the age refers to the genetic organism or root system, not necessarily the trunk visible today.
Ten leading candidates for the oldest living trees
This is not a definitive one-to-ten ranking. The candidates include both individual trees and clones, and their ages were determined in different ways.
| Tree or organism | Location | Reported age | Evidence |
|---|---|---|---|
| Pando | Utah, United States | Often about 14,000 years | Clonal age, unconfirmed |
| Old Tjikko | Sweden | 9,550 years for dated material associated with the clone | Clonal age; challenged |
| Unnamed Great Basin bristlecone pine | California, United States | 5,074 years as of 2024 | Verified individual age |
| Alerce Milenario (Gran Abuelo) | Chile | Model estimate of 5,484 years; partial core indicates at least roughly 2,400 years | Model-estimated, partial ring evidence |
| Methuselah | California, United States | 4,856 years as of 2024 by Guinness; 4,765 by the National Park Service | Cross-dated individual age |
| Sarv-e Abarkuh | Iran | About 4,000–4,500 years | Estimated |
| Llangernyw Yew | Wales | Traditionally 4,000–5,000 years | Traditional and uncertain |
| Jōmon Sugi | Japan | More than 2,700 years officially; higher estimates are disputed | Estimated |
| Te Matua Ngahere | New Zealand | More than 2,000 years; some estimates reach about 2,500–3,000 | Estimated |
| Tāne Mahuta | New Zealand | About 1,500–2,000 years | Estimated |
1. Pando: an ancient aspen clone
Species: quaking aspen (Populus tremuloides)
Location: Fishlake National Forest, Utah, United States
Reported age: often about 14,000 years, but unconfirmed
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Pando is one of the world’s largest known organisms by mass and area. What appears to be a stand of separate aspens is genetically one clone connected by a shared root system. Its visible stems, or “ramets,” are much younger than the root network and are continually replaced.
Genetic research supports the conclusion that Pando’s stems belong to one clonal organism, but it does not establish a precise starting date. The frequently repeated 14,000-year figure is an estimate, not a verified age for one trunk.
2. Old Tjikko: Sweden’s clonal spruce
Species: Norway spruce (Picea abies)
Location: Fulufjället National Park, Sweden
Reported age: 9,550 years for dated material associated with the clone
Category: clonal age; scientifically challenged
Old Tjikko is a living Norway spruce associated with an ancient underground clonal system. New trunks can grow after older above-ground growth dies, allowing the clone to persist.
Rank #2
The 9,550-year figure comes from radiocarbon-dated wood associated with the system, not from counting rings in the current trunk. A published critique argued that genetic continuity between the dated material and the living tree had not been adequately demonstrated. Treat the age as famous but contested.
3. The unnamed Great Basin bristlecone pine
Species: Great Basin bristlecone pine (Pinus longaeva)
Location: White Mountains, California, United States
Reported age: 5,074 years as of 2024
Category: cross-dated individual tree
Guinness World Records identifies an unnamed Great Basin bristlecone pine as the oldest currently verified living individual tree. Its exact identity and location are not publicly disclosed, helping protect it from vandalism and excessive attention.
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4. Alerce Milenario, or Gran Abuelo
Species: Patagonian cypress (Fitzroya cupressoides)
Location: Alerce Costero National Park, Chile
Reported age: model estimate of 5,484 years; a partial core establishes at least roughly 2,400 years
Category: model-estimated, with partial ring evidence
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Alerce Milenario is a massive living Patagonian cypress. The headline age of 5,484 years was produced by a growth model using partial sampling and assumptions about unsampled parts of the trunk; it is not a complete count of every ring from center to bark.
The estimate remains disputed. The species also has a separately documented living specimen with a cross-dated age of about 3,622 years, a stronger individual-tree record than the model estimate for Gran Abuelo.
5. Methuselah
Species: Great Basin bristlecone pine (Pinus longaeva)
Location: Ancient Bristlecone Pine Forest, White Mountains, California
Reported age: 4,856 years as of 2024 according to Guinness; 4,765 years according to the National Park Service
Category: cross-dated individual tree
Methuselah is the oldest named living individual tree. It is not necessarily the oldest bristlecone alive: the unnamed specimen above has a higher verified age. Its precise location is kept secret by the U.S. Forest Service to reduce the risk of damage.
Its age comes from bristlecone-pine ring research, not appearance. Bristlecones may preserve only narrow living strips around sections of dead wood, so their unusual shapes are evidence of survival, not a measuring stick for age.
6. Sarv-e Abarkuh, the Cypress of Abarkuh
Species: Mediterranean cypress (Cupressus sempervirens)
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Rank #4
Location: Abarkuh, Yazd Province, Iran
Reported age: approximately 4,000–4,500 years
Category: estimated
Sarv-e Abarkuh is a celebrated living cypress and an important cultural landmark in Iran. Its age has not been established by a complete ring count; commonly repeated figures are estimates based on size, species, growing conditions, and historical context. Describe it as several thousand years old, not as exactly 4,500 years old.
7. Llangernyw Yew
Species: common yew (Taxus baccata)
Location: Llangernyw, Conwy, Wales
Reported age: traditionally 4,000–5,000 years
Category: traditional and uncertain
The Llangernyw Yew grows beside St Digain’s Church in North Wales and is one of Britain’s best-known ancient yews. Its traditional age range is not securely verified.
Ancient yew trunks can become hollow, lose their original heartwood, and develop new growth around the perimeter. Without the oldest central wood, ring counting cannot establish a complete age. The tree is unquestionably ancient, but its traditional age should be treated cautiously.
8. Jōmon Sugi
Species: Japanese cedar (Cryptomeria japonica)
Location: Yakushima, Japan
Reported age: more than 2,700 years according to Japan’s environment ministry; higher estimates are disputed
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Category: estimated
Jōmon Sugi is the largest and most famous ancient cedar on Yakushima. Its hollow trunk prevents a precise full-ring count, and estimates have ranged widely, with some popular accounts claiming as much as 7,000 years.
Japan’s Ministry of the Environment gives the more conservative figure of more than 2,700 years. That is the safer description; higher estimates are uncertain possibilities, not established facts.
9. Te Matua Ngahere
Species: kauri (Agathis australis)
Location: Waipoua Forest, Northland, New Zealand
Reported age: more than 2,000 years; some estimates reach approximately 2,500–3,000 years
Category: estimated
Te Matua Ngahere, whose Māori name means “Father of the Forest,” is one of New Zealand’s largest and oldest living kauri. The Department of Conservation describes it as more than 2,000 years old.
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The age is an estimate rather than a complete, cross-dated ring sequence. The tree is vulnerable to kauri dieback disease, so visitors should follow local hygiene and access rules in kauri forests.
10. Tāne Mahuta
Species: kauri (Agathis australis)
Location: Waipoua Forest, Northland, New Zealand
Reported age: approximately 1,500–2,000 years
Category: estimated
Tāne Mahuta is another monumental kauri in Waipoua Forest. The Department of Conservation has described it as about 1,500 years old, while more recent conservation material uses an estimate of approximately 2,000 years.
Its age is not a precise ring-counted figure. Its significance also comes from its size, survival, cultural importance, and place among New Zealand’s ancient kauri forests.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Why famous “oldest tree” lists often get it wrong
- They mix clones and individual trees. Pando’s age refers to a shared root system; Methuselah’s refers to one tree.
- They treat estimates as measurements. A model-based age such as Alerce Milenario’s 5,484 years is not a complete cross-dated ring count.
- They use outdated records. Guinness identifies an unnamed bristlecone as the oldest verified living individual, while Methuselah is the oldest named tree.
- They include dead trees. Prometheus was cut down in 1964. Its stump remains, but it is not a living tree.
- They calculate age from girth. Circumference alone is unreliable because of species, climate, hollow wood, buttressing, and repeated regeneration.
Which tree is actually the oldest?
| Definition | Strongest candidate |
|---|---|
| Oldest possible living genetic organism | Pando, although its approximately 14,000-year age is unconfirmed |
| Ancient clonal system with dated associated material | Old Tjikko, with a 9,550-year claim that has been challenged |
| Oldest verified living individual tree | Unnamed Great Basin bristlecone pine, 5,074 years as of 2024 |
| Oldest named living individual tree | Methuselah, 4,856 years by the Guinness figure |
| Strong cross-dated Patagonian cypress record | A separately documented living Fitzroya specimen, about 3,622 years |
| Famous tree with a high model-based estimate | Alerce Milenario, estimated at 5,484 years |
The unnamed bristlecone and Methuselah provide the clearest evidence for old individual trees. Pando and Old Tjikko may be older as clonal organisms, but their ages describe genetic systems rather than uninterrupted living trunks.
FAQ
What is the oldest living tree in the world?
There is no universally accepted answer. Pando may be the oldest living clonal organism, with an often-reported age of about 14,000 years, but that age is unconfirmed. For a single verified living tree, Guinness identifies an unnamed Great Basin bristlecone pine dated to 5,074 years as of 2024.
Is Methuselah the oldest tree on Earth?
Methuselah is the oldest named living individual tree, commonly listed at 4,856 years as of 2024 by Guinness. It is not definitively the oldest living tree: an unnamed bristlecone has a higher verified age, and clonal organisms may be older.
Is Old Tjikko really 9,550 years old?
The 9,550-year figure applies to dated wood associated with Old Tjikko’s clonal root system, not necessarily the current trunk. The claim has also been challenged because genetic continuity between the dated material and the living tree was not considered adequately demonstrated.
How do scientists date ancient trees?
The strongest method for an individual tree is counting and cross-dating annual rings. Radiocarbon dating can date old wood, including material associated with clonal root systems, but it does not necessarily date the current trunk. Hollow or damaged trees often have only model-based or traditional age estimates.
Is Alerce Milenario proven to be 5,484 years old?
No. That figure is a model estimate based on partial sampling and growth assumptions, not a complete ring count. A partial core indicates the tree is at least roughly 2,400 years old.
The bottom line
The world’s oldest living tree depends on what counts as a tree and what counts as proof. Pando may be the oldest living clone, while the unnamed Great Basin bristlecone pine is the strongest candidate for the oldest verified individual. Methuselah remains the oldest named tree. Other candidates are remarkable survivors, but their ages should be presented as estimates or disputed claims, not exact proven rankings.
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