Cpappa27
Well-Known Member
I wish I thought of this like 3 months ago I would have done this with dozens of plants outdoors and tomatos to test different sands, mixes, additives, etc with the sand. I love the sand idea though, no weeding the garden and if I level it right I can water super fast. I wonder if flood and drain would work with sand?If you do a deep dive into Dr. Mittledier those are the type of studies and his peers he founded his work on and worked with. If you do a deep dive into Ag Texts and science of the 40s and 50s you should find his work.
Essentially my point to you was pure sand is too dense a medium. He cut it with sawdust. I don't have a good source of sawdust but I did have plenty of coco/perlite so I repurposed it. But sand will work. It is simply another inert, soilless medium that will provide denseness but you also need a lightener to the mix such as vermiculite or perlite. I'd go with less sand and lean more toward a finer perlite/vermiculite. Definitely coarser than the sand but smaller than the xlarge type perlite I mix with light coco pith.
I hope this help. I've always loved gardening and the science behind it but I admit I have a fairly black thumb LOL
I can get sawdust easily. I wonder what the nutrient value of the sawdust is in the sand or does it even break down since theres no real microbes in there?