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With the name of viburnum different species of shrubs and trees are grouped, similar in characteristics but with some specific peculiarities. The type of viburnum most widespread in the Italian peninsula is that of viburnum vat, an evergreen shrub, characterized by great strength and adaptability to many situations and climates. It is a plant that needs little maintenance, and can withstand temperatures well below freezing level, up to -10 / 15 ° C. It is abundantly widespread in the Mediterranean area, it also grows spontaneously, thanks to its ability to withstand even climates with low rainfall. In fact the viburnum from the water point of view does not need abundant quantities of water, also variable according to the latitude in which it is found, and watering is advisable only in the presence of dry soil, with an increasing irrigation frequency with the proceeding towards the beautiful season.
Also from the point of view of cultivation, viburnum is confirmed as a plant characterized by the ease of care required, not requiring specific attention in this regard. The pruning of viburnum generally does not require a particular procedure, as it also supports operations of heavy thinning of its foliage, with the exception of the flowering period in which it is necessary to proceed with greater caution. A good rule to follow is to avoid water stagnation by inserting small layers of clay or sand in the culture soil, to ensure adequate transpiration. The viburnum can be indistinctly cultivated either in pots or directly in the ground, and it is also very versatile in its configuration, in fact you can see shrubs, trees or hedges of different species of viburnum.
How to fertilize
The viburnum is a plant that gives many satisfactions to its admirers, who see this shrub faithfully responding to the care paid. To obtain the maximum yield possible from viburnum, it is advisable to carry out a slightly differentiated systematic fertilization, using in the spring period a compound particularly rich in potassium and phosphorus, to give the right and appropriate vigor to the plant in the greatest moment of growth. During the autumn and winter period, the viburnum must stabilize its structure by increasing the circumference of its stem and developing the roots; for this reason a fertilizer with a low nitrogen content will be added to the viburnum, avoiding a possible late production of new foliage, which could weaken the plant's defenses in the most rigid period of the year.
Viburnum: Diseases and pests
While confirming that viburnum is a somewhat resistant plant, there are some situations that should be emphasized to ensure long life and prosperity for this lush shrub. One of the main dangers can be directly caused by the action of man, in fact an abundant watering, without guaranteeing an adequate drainage of the ground in which the viburnum is planted, can expose it to the risk of attack by Phytophtora (fungus that attacks the collar ) or of the Phoma (fungus that causes necrotic areas located on the leaves and on the trunk). Among the enemies of viburnum there is also the common red spider mite, which occasionally can inhabit and proliferate on the plant, and a timely disinfestation action is necessary to prevent the problem from becoming chronic.