HELL YEAH!! Sand mixed with clay is what some people call cement. Not a good thing. But clay less sand, oh yeah. I grew up in sand pits, with pine trees- East Texas. There is a place south of here that is nothing but sand, and the best watermelons are grown there. People ask, WTF??? Answer, you can grow anything in sand if you water & nute enough. The sand is basically good drainage, no more, no less. So water retention is most import. So basically, you need a home where your microbes can party, like compost. You have a composter??? You should know about building your microbial life & breaking down composting material. Do you add molasses to your compost-er? If not, we have to have a little talk. Compost is just a carbon material used as a base to start good soil. Sterile compost may retain moisture, but without microbes to breakdown & cultivate, your sucking hind tit to Mother Nature. See a Post of mine in this section, Any Outdoor Southern Growers out there, or something like that. It's in 3 parts.