Which plant has the longest life span?

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Plants are divided into three groups: annuals, biennials, and perennials. The first group lives one growing season. The second lives two growing seasons. The third lives three or many more growing seasons, such as a tree. Bristlecone pines live the longest at 5,000 years. The creosote bush is thought to be 12,000 years old but it basically clones itself so that may "not count" as far as some people are concerned. The shorest lived plants are summer annuals or spring annuals living only a few weeks in some cases such as various weeds that get in your lawn, then two weeks later they've already bloomed and died. For example, sometimes dandelions and white clovers and so on live for only very short periods of time in your lawn. Here's a link for the oldest living plants and other odd and interesting plant trivia you may or may not find interesting. Source(s): http://waynesword.palomar.edu/ww0601.htm http://answers.yahoo.com/question/index?qid=20070415070037AAe2oTX Among plants the bristlecone pine of California has the greatest longevity over 4 600 years. See geriatrics . http://answers.encyclopedia.com/question/longest-life-span-plant-161471.html Dec 02 12, 8:24 AM