To do this you need the stones or bricks, sand, cement, gravel. Several hardy shrubs and flowers. And now next to you were the mysterious ruins of the old castle. Such alpine garden will be especially, by the way, on a site that has a bias. In this case, the garden is divided into parts and make a few retaining wall, next to which suit the steps. But there is a variant on a flat surface. The height of the retaining wall, depending on your wishes, but we must remember that in wet, clay soils, it must be not less than 120 cm, and the dry sand – no more than 70 cm to get involved in too high buildings should not be, since in this case, the winter will be the rock garden from the snow, which is very hurt plants.
At the base of the ruins of a future building foundations (in the pit depth of not less than 40 cm poured gravel or broken bricks and poured cement mortar). He laid on the first two rows of flat stones, also on the solution, making sure that it was not visible. For the remaining stone masonry cement solution is no longer required. He was replaced by moist fertile soil (1 part leaf humus, 1 part compost, 1 part sand.) Wall building is not strictly plumb, and with a slight slant. That is, the stones at the base should be wider than in subsequent rows. In the earthen mixture that is placed on each subsequent row, instead of cement mortar, you can immediately put the seeds of Phlox subulate, baby's breath, stonecrop, Alyssum.