The world's largest plant, by area covered, is a clonal colony of quaking aspen named Pando, located in Utah, USA.

Here's why it's considered the largest:

* Clonal Colony: Pando is a single organism, consisting of a massive network of genetically identical trees that share a single root system.

* Vast Size: It covers an area of 106 acres (about 43 hectares) and is estimated to be over 80,000 years old.

* Weight: It is estimated to weigh over 6,000 tons.

While there are other contenders for the title of "largest plant," such as the General Sherman sequoia (largest by volume) or the Armillaria ostoyae (largest by area in terms of underground fungal network), Pando stands out as the largest single plant organism by area.