Sphagnum

plant genus

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Last updated

July 14, 2026

Quick Summary

Sphagnum is a genus of over 300 species of mosses that grow in wet, acidic environments like bogs and swamps. These plants, which can be pale green to deep red, are known for their ability to absorb and hold large amounts of water, up to 20 times their weight.12

The metabolic processes of Sphagnum increase the acidity of the surrounding water, which slows down decomposition and leads to the formation of peat over time. This peat has been used historically as fuel, surgical dressings, and as a soil additive by gardeners for its moisture-retaining properties. However, the harvesting of peat moss and peat can harm delicate bog ecosystems, and their role in carbon sequestration makes their protection important for mitigating climate change.1

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bryophyte
Ecology and habitats
The moss genus Sphagnum leads to the development of waterlogged masses of highly acid peatland, in which decomposition is relatively slow. The formation of extensive bogs can control the hydrology of much of the surrounding landscape by behaving like a gigantic sponge that absorbs and holds vast quantities…
Read More
The moss genus Sphagnum leads to the development of waterlogged masses of highly acid peatland, in which decomposition is relatively slow. The formation of extensive bogs can control the hydrology of much of the surrounding landscape by behaving like a gigantic sponge that absorbs and holds vast quantities…
Read More