‘How old is the oldest tree in the world?’

The world’s oldest tree is a colony called Pando, which shares one underground root system. It is a grove of trees located in Fishlake National Forest, Utah, United States. Its estimated age is over 80,000 years. Pando has been able to survive for so long through cloning and the growth of new trees that are part of the grove. The old trees are replaced by new ones, but the root system remains shared.

Another very old tree is Old Tjikko, discovered in Sweden in 2008. Its estimated age is 9,550 years. Although it is a single tree, it has also survived through cloning, although it is not a tree colony like Pando. Unlike Pando, Old Tjikko regenerates its branches and roots in the same place. The root system of Old Tjikko is about 10,000 years old, while its individual branches usually live for 600 years and new ones grow in their place.

The world’s oldest known individual tree was considered to be an unnamed Great Basin Bristlecone Pine from Inyo County, California. Its age is estimated to be 5,062 years. This estimation was made by Tom Harlan in 2010, and in 2012 the unnamed Great Basin Bristlecone Pine was officially recognized as the world’s oldest tree. Unfortunately, in 2017, its status was revoked because no core samples taken by Tom Harlan could be found, so there was no way to confirm its age.

Until 2012, the oldest known tree in the world was Methuselah, growing in Inyo County, California. Its age is estimated to be 4,850 years. Methuselah was discovered in 1957 by Tom Harlan. According to calculations, the tree sprouted around 2832 BCE, making it older than the Egyptian pyramids.

Source: Oldest.org (https://www.oldest.org/nature/trees/)




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