I found the soil here in my area... is all sand. Makes sense being ocean front. I brought in truckfulls of topsoil and found most of that was clay. If you take a handful and ball it up and it stays a ball then you have a lot of clay. I have a few gardeners that come to me to get my used horse stall waist with the saw dust/wood shavings that they mix into the soil and have had very good results. Some is about a year old. PM me if you want to come and collect some. Good luck.