i live in the deserts of phoenix and have had a garden every year for about seven years. this last year i spent all winter preparing the soil by turning it and breaking it up on a new plot. by spring i was almost ready and i knew my soil needed more fertility so i went to the store looking for soil but it was too expensive or they were out. in a corner i saw bags of peat moss and bags of manure. the manure being more expensive i grabbed a few things of peat and added it to my soil. i tell you, the soil out here is mostly sandy and rock hard from all the citrus groves not more than 50 years ago. any growth now i slow and produces little in the form of sustainability, but when i added the peat, my yeilds tripled, the growth rate tripled, i even was able to give food away. i've had problems before where beefsteak tomatoes would turn out to look more like cherry tomatoes but not this past year.
that brings me to my next point. does anyone either know of how to make peat or where a good place to get it cheap is? i think i'll be using it every year now.