I am trying to grow a garden and the soil here is very sticky and chunky. I believe it to be clay and I have tried all kinds of things to help it soften and be less chunky. I've tilled it many times and everytime I've added lawn clippings or other composte type things. I bought some soil conditioner just the other day and I tilled it in yet it is already starting to look the same. I've been told that sand would help break it down yet it didn't work either. Or is it that I didn't add enough? Can someone please give me an answer?