Hi all, It sounds crazy, but my small condo garden seems to have 3 distinct sections, each containing a different type of soil. I imagine the builder just threw in whatever was on hand. My problem is that one of the sections has passable topsoil, covering deep, almost solid clay base layer with a bit sand way down below that. Plants seem to plod along, but do not flourish as they do in other areas of the garden. Each time I move or plant new, I've been digging about 3 inches deeper than necessary, discarding the existing soil and using fresh, newly purchased soil, adding some of my own vermicompost. Essentially, slowly replacing the old soil. Sadly, this approach hasn't seemed to really improve the problem. What else can I do to improve this nasty soil? Is this a drainage issue because of the clay? Being in a condo, large scale soil replacement isn't currently an option. Thanks for all your help!