Pando

~6,000 t

Heaviest known living organism, a quaking aspen clone

Estimated Natural oddities · Verified 2026-10-31 · WWV-WW-001

Pando, in Utah, is a single aspen clone made of about 47,000 stems joined by one root system. It covers 43 hectares and weighs about 6,000 tonnes.

Some fungal colonies cover more area but weigh less.

Sources