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What are the oldest living plants in the world today? What can you know about them? Why can some plants live so long?

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    $\begingroup$ please ask only one question and try to be spesific,what type of research has you done so far.you have multiple questions here. $\endgroup$ Sep 12 at 14:13
  • $\begingroup$ Arguably Pando, an aspen grove that is a single connected organism: en.wikipedia.org/wiki/Pando_(tree) But for the many plants that spread by vegetative methods such as root suckers, the question of what exactly an individual plant is becomes rather difficult to answer. For instance, I have many varieties of roses in my garden, all propagated (for instance, by rooting cuttings) from plants that were in some cases bred a century or two ago. Are they still the same plant? $\endgroup$
    – jamesqf
    Sep 12 at 16:39
  • $\begingroup$ Just to be clear; you are asking for oldest individuals of plants, right? Not the oldest still living species (~living fossil)? $\endgroup$ Sep 13 at 8:31
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Great Basin bristlecone pines (Pinus longaeva) have been known to live to be thousands of years old.

The oldest known living individual is named Methuselah and is estimated to be more than 4,800 years old. It's been credited as the oldest living non-clonal organism on Earth.

There are multiple other trees over 1000s years old.

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