Newswise — Dec. 1, 2017 – The Giant Sequoya? Nope. The African elephant? Not even close. The Soil Science Society of America (SSSA) December 1 Soils Matter blog post shares that the largest land organism is—a fungus!

Those who know soil understand the biodiversity lurking within. And that includes the honey fungus, the largest terrestrial organism.

The largest honey fungus identified in North America is in Oregon. It measures 3.4 miles across! Scientists also believe that this particular honey fungus may be over 2,000 years old. The next largest honey fungus is in the neighboring state of Washington.

The honey fungus gets its size from its ability to fuse into a single organism. Soil scientist Jesse Morrison, from Mississippi State University, explains: “When mycelia from different individual honey fungus bodies meet, either in or on the soil surface, they can attempt to fuse to each other. The fungi must be genetically identical honey fungi. When the mycelia successfully fuse to each other, they link very large fungal bodies together. This, in turn, changes extensive networks of fungal ‘clones’ into a single individual.”

To read the entire blog post, visit…estrial-organism/.

Follow SSSA on Facebook at, Twitter at SSSA_Soils. SSSA has soils information on, for teachers at, and for students through 12th grade,

The Soil Science Society of America (SSSA) is a progressive international scientific society that fosters the transfer of knowledge and practices to sustain global soils. Based in Madison, WI, and founded in 1936, SSSA is the professional home for 6,000+ members and 1,000+ certified professionals dedicated to advancing the field of soil science. The Society provides information about soils in relation to crop production, environmental quality, ecosystem sustainability, bioremediation, waste management, recycling, and wise land use.

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