The Viburnum is a genus of shrubs that includes about 200 species, typical of the temperate regions of the northern hemisphere. Its dimensions vary between 1 and 5 meters in height and diameter and it is characterized by white or pink flowers gathered in selvedges inflorescences, while the fruits are roundish or ovoid drupes, with colors varying between red, dark blue and black. In most cases these are rustic plants, suitable for cultivation in soil, depending on the species with evergreen or deciduous foliage. These shrubs should therefore be grown in a cool, well-drained and fertile, partially shaded soil. The viburnum in fact suffers from particularly loose and dry soils. The early flowering species must be planted in sheltered positions and not exposed to the early morning sun: after a frost, in fact, the latter could damage flowers and young shoots.
The evergreen species must be planted at the beginning of autumn or spring, while those with deciduous leaves will be planted between October and March, when the weather conditions are more favorable. Dig a hole that must be large enough to accommodate, in addition to the plant, also a good amount of organic fertilizer that favors the development of the roots. The hole must then be covered with earth and thoroughly wet, without forgetting to compress it. Finally, spread around the plant a mulch of about 10 cm of organic substance.
The Viburnum does not require regular pruning, you will have to intervene only to eliminate the damaged parts and to thin the crown. In any case, we will proceed in April for winter flowering species, in summer instead for the later ones.