- Who
- Quaking aspen, Populus tremuloides, Pando
- What
- 6000 tonne(s)/metric ton(s)
- Where
- United States (Wasatch Mountains)
- When
The world's most massive plant was reported in December 1992 to be a network of quaking aspen trees (Populus tremuloides) growing in the Wasatch Mountains, Utah, USA, from a single root system, covering 43 ha (106 acres) and weighing an estimated 6,000 tonnes (13,227,720 lb). The clonal system is genetically uniform and acts as a single organism, with all the component trees (part of the willow family) changing colour or shedding leaves in unison.
