Rocks can determine the special character of a garden type, generally a small size garden- rock garden. Rockeries are not usually independent, but they reproduce on a smaller scale rock landscapes which are associated with appropriate vegetation, suggesting a mountain scene from a certain geographic area. For an alpine garden the micro relief is composed of uneven hills and valleys, allowing the design of storied elements, which can include a spring or a small waterfall, followed by a small creek (the water can be recycled with the help of a pump). Assembly volume and rock positioning harmony should be given special attention.
Relief inequality is accompanied by rocky masses inequality: in the small rock gardens, at least a piece or a group o rocks has to dominate the ensemble. We take into consideration the principles stated above: using the same type of rock or related rocks, their arrangement on different levels of the ensemble. In the rock garden we design storied paths or turning paths in order to have access to the slope, and in the lower areas we design narrow alleys , all made of uncut flagstone; the alleys can be covered in chipping from the same material.
For the stability of the ensemble, the rocks are embedded in the ground, in a small counter-slope, irregularly storied; the different offset levels support one another and they can be even consolidated with concrete. We also take into consideration the cant in counter-slope of the superior part of the rocks that support the soil amount which is destined for the plants, in order to receive the water from rain, and thus to prevent erosion. The spaces and niches for the vegetation, which are placed on different levels, are filled in with fertile soil that has a sand texture which is placed on a draining substrate. The thickness of the soil layer is at least 40-50 cm for shrubs and 20-30 cm for herbaceous plants.