What is Peat Soil? Here at lawn-seeds.com In our region of the country we don’t come across peat-based soil that often. But we do have the experience and answers to help you and your garden. Peat soil is an organic soil type that forms from the accumulation of partially decomposed plant material in waterlogged conditions. It is dark, almost black, with a spongy texture and high moisture-retention capacity. Peat soil is rich in organic matter, making it very fertile, but it is naturally acidic and prone to water-logging. Its ability to hold water and nutrients is beneficial to certain plants,…