15 Fastest Growing Organisms in the World

14. Honey Fungus

Kingdom: Fungus

Scientific Name: Armillaria

Growth Rate: 0.1 inches per day or 1 metre per year

This parasitic fungus grows on woody plants which may be living, dead, or decaying. It usually spreads very quickly and can cause immense damage to forests, killing the roots of trees it spreads to. The average growth rate is about 1 meter per year, though some can spread at a rate of up to 3 feet a year under ideal conditions. An article published by the BBC in 2014 identified a specific honey fungus as the largest living organism in the world at that time. The fungus was spread over the Blue Mountains in Oregon, and measured a length of 2.4 miles.

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