Just been down to check out my new, new plot ( moving sites) and under a good layer of grass is carpet , in fact it is carpeted top to toe over the whole plot and under the carpet is clear plastic, according to the neighbours this plot hasn't been used for at least a 2 years ( the plastic is very brittle)
Under the carpet and plastic the soil is very, very hard ( and shiny!) will being under these layers of carpet/plastic for so long have damaged the soil or is it just a case of breaking the top crust??, ( or shall I cheat and do raised beds with bought in topsoil???)