Hello members, my wife and I are building a house and starting a new garden near Uzès. We will be landscaping over summer 2014, and start planting in the Autumn. I believe the plot was cleared at one stage but appears to have reverted to Garigue over the last few years, with wild Cistus, Thyme etc. The soil is classic med garden material, thin topsoil of a few cms over rock. Conditions have been made worse by heavy machinery digging out the pool and foundations, and back filling a shallow slope between house and pool with the rocks and soil, probably 80 or 90% rock. I have read O. Filippi and note his advice about not importing topsoil, large planting bowls etc, but would this apply to our situation with so much rock? We have consulted a local nurseryman and landscaper and he recommends adding 20-40cms topsoil with some kind of membrane between the rock and topsoil. Instinctively this seems to go against Filippi's advice, but I would like MGS members opinions on this. I'm sure if we left the rock rubble as is, nature would find a solution and the Cistus and others would return. My best guess is a hybrid solution with some topsoil used for planting specimen trees in large holes, and suchlike, trying to work topsoil into the rock where possible. Help please!