When and how much to water

The genus of plants called Viburnum includes hundreds of different deciduous or evergreen species and varieties. If the plants are grown in pots, care must be taken to irrigate regularly and constantly, starting from the spring season and for the following summer months. With the arrival of autumn, the waterings must be gradually reduced and are completely suspended in winter. The shrubs of Viburnum fear water stagnation and it is advisable to protect them from excessively rainy years, always ensuring the correct drainage of watering. The specimens grown in the ground do not require particular attention. In fact, in these cases, irrigation is essential only in late spring and in the hottest summer months, such as July and August.

How to take care of it

Viburnum shrubs can be easily grown in different climatic contexts, always growing luxuriantly. This kind of plant is mainly characterized by an upright or rounded posture. They do not like too loose soils and prefer moist and soft substrates, preferably composed of garden soil, peat and coarse sand. They resist very well to harsh climatic conditions, withstanding winter temperatures below -10 ° C. Viburnum plants must be protected from strong currents and winds coming from the north, which can damage the foliage and the root system. To stimulate the birth of new leaf shoots, it is advisable to prune these vegetables at the end of the winter season.

When and how to fertilize

To obtain strong and luxuriant Viburnum plants, it is always advisable to give a good fertilizer at certain times of the year. At the end of winter it is possible to dispense a mature organic fertilizer, to be mixed with the upper layers of the substrate. The operation is also repeated in autumn in anticipation of the upcoming cold season. You can also opt for a complete liquid solution, rich in potassium and phosphorus, to be diluted in irrigation water approximately every 20 days. The most suitable period is from the month of March, until the arrival of the autumn months. Alternatively, you can choose a slow release granular fertilizer to always be supplied in early spring and autumn. If necessary, it is also possible to use iron sulphate.

Viburnum: Exposure, diseases and remedies

The shrubby plants of Viburnum, grown in territorial contexts with a continental climate, prefer bright and sunny exposures. Instead, the specimens grown in the southern regions must have a cool location and preferably in partial shade, away from the sun during the hottest hours. They are resistant plants and can rarely be affected by parasitic attacks, such as aphids. In these cases, it is possible to intervene with a cotton swab soaked in alcohol, manually eliminating the insects. Alternatively, it is indicated to use a specific insecticide. Furthermore, another insidious enemy of Viburnum plants can be the powdery mildew also called bad white. To avoid the spread of fungal disease, it is important to use products based on copper and sulfur.

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