Planting intervals, sometimes called spacing, they depend primarily on the sizes that can be achieved by the plants. The principle of creating conditions for unrestricted growth is important in the design of plant placement. This is especially true there, where the solid features of plants play an important role in the compositional systems, that is, their habit. Too small spacing of planting woody plants in multi-species systems quickly cause the plants to clump together and their lumpy and compositional features to disappear.. Therefore, the plants are planted more densely there, where decorative functions play a minor role, for example in wooded areas, windscreen or insulation strips. Woody plants planted at larger intervals grow better, they are much healthier and easier to care for.
Currently, an increasingly important criterion for the distribution of plants in a given area is not only compositional considerations, but also technical and economic considerations. Maintaining lawns and using high-capacity mowers is difficult and sometimes impossible among large numbers of scattered trees and shrubs. For these reasons, it is recommended to arrange trees and larger shrubs loosely, and definitely compact - planting small shrubs.
It is up to the designer to determine the planting spacing in detail. Therefore, in each project, distances are given that determine the exact place of planting larger trees and shrubs. For plants in compact arrangements, the outer outline of the group and the required planting spacing are usually provided. It is best to mark the planting sites for trees and individual shrubs by placing a peg with a label. The places of shrubs designed in groups are determined by marking their outline with a peg or a sharp tool and placing inside a label with the name of the plant and the required planting spacing..
Acceptable minimum tree planting distances 1 bushes from various objects and devices in the field
| The name of the object or device | Minimum distance (w m) | |
| trees | bushes | |
| Construction objects of over 7 m | 5 | 1,5 |
| Construction objects less than 7 m | 4 | 1,5 |
| Retaining wall feet, steep slopes and terraces | 1 | 0,5 |
| Height fences 2 m and higher | 4 | 1 |
| Lighting network poles, traction, etc.. | 2 | 1 |
| Edges of garden and park paths | 0,75 | 0,4 |
| Road curbs | 2 | 0,5 |
| Gas pipe lines | 2 | 2 |
| Edges of the heat network channels | 2 | 1 |
| Lines of sewage and water pipes | 1 | 1 |
| Electric cable lines | 1,5 | 0,8 |
It may happen, that the measurements that are the basis for designing the spacing of trees are not very accurate and as a result the location of some trees or shrubs falls too close to various objects in the field. Therefore, it is necessary to know the minimum distances of trees and shrubs from these objects.