Soil amendments improve the physical properties of soils. Amendments are mixed into the soil. Mulches are placed on the soil surface.
Wood products can tie up nitrogen in the soil.
Sphagnum peat is superior to Colorado mountain peat. When using biosolids, choose Grade 1 biosolids. A soil amendment is any material added to a soil to improve its physical properties, such as water retention, permeability, water infiltration, drainage, aeration and structure. The goal is to provide a better environment for roots. To do its work, an amendment must be thoroughly mixed into the soil.