In order to ensure optimal conditions for the development of trees, you should not build impervious surfaces in their vicinity. However, the surfaces of a small cube or cobblestone turned out to be very good, laid on a 10-20-centimeter layer of coarse sand or gravel. The gaps between the stones are also covered with coarse sand, which of course ensures easy penetration of water and air. If it is necessary to build trees with higher load strength in the vicinity of the trees (np. in parking lots) Instead of increasing the thickness of the surface, it is now used more and more often 8-10 centimeter concrete slabs of a special structure. These plates are laid on a layer of gravel or coarse sand. Almost half of the surface of these plates are holes, through which after filling easily permeable material, you can provide very good air access and easy water penetration into the soil. An additional advantage of the plates is the ease of watering the trees secured with them during the drought period and the ability to provide them with mineral fertilizers (in solutions or in loose form) by specially made small holes.
When making the surface in the vicinity of the tree, inelastic materials, np. large plates or curbs, which can be raised due to the growing of a tree, broken or can crack. As a result of wrapped phenomena, Often, trunk or root wounds may also occur. You should also remember, that building the road surface too close to the tree exposes them very often to cutting vehicles.