Know your soil well to grow better plants! It is important to have a general knowledge about the structure of your soil. Are you working with clay or sand? Do a simple soil structure test in a canning jar and you will have a good place to start with your amendments (scroll back to find out how!) Use these soil fixes to help while planning a garden: :: If you have clay soil – add coarse sand (not beach sand), compost, and peat moss. :: If you have sandy soil – add humus or aged manure, peat moss, or sawdust with some extra nitrogen. Heavy, clay-rich soil can also be added to improve the soil. :: If you have silt soil – add coarse sand (not beach sand) or gravel and compost, or well-rotted horse manure mixed with fresh straw.