When we "condition" our soil, we are taking steps to improve its quality, texture, and structure so that it provides a more effective environment for plant roots that grow in it. While it directly improves the soil, it is, of course, indirectly improving plant quality of life.
Soil Conditioners are not fertilzers, but in various situations are very valuable additions in helping make your soil productive for growing your landscape plants.
These products often deal with improving the drainage of you soil and some will also deal with the water holding capacity of your soil.
Others are designed to adjust pH problems of soils that might be too acid or too alkaline for your plants.
We have a complete discussion about building and maintaining good soil in the landscape in Yardener's Helper; click here