When "Soil" Isn't Soil
Wednesday, October 7, 2015 - 15:50
in Earth & Climate
Peat is currently a major component of many potting soil blends. Peat is the layered accumulation of partially degraded organic material over hundreds of years. But in some parts of the world, peatland habitats are shrinking. The harvest of peat may also release additional carbon, contributing to climate change. Efforts are underway to find suitable replacements--a considerable challenge given the airy, absorptive nature of peat that is ideal for plant growth.