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Boxwood in its various types and varieties is one of the most popular trees and shrubs in the garden. Cultivated in tubs, it also cuts a fine figure on the balcony or terrace - especially when cut into interesting shapes, creating an exciting, evergreen contrast to flowers and other flowering plants.
Boxwood can also cope with blazing sun
location
Although the boxwood does well in full sun, as long as the location is not too warm and sheltered, it prefers light penumbra. Dry damage or even burns are not uncommon in a place in full sun, especially on hot days. If you still want the box to be in the sun, get used to it slowly and do not put it there immediately after purchase.
substrate and pot
Usually, a conventional substrate for green plants is sufficient, which you should fill in a sufficiently large and deep pot. Boxwood has very sensitive roots that react quickly to disturbances, they also spread both in width and in depth and branch out very strongly. Basically, the boxwood belongs to the flat-rooted species, i. H. the tub should be about a third wider than the root ball.
repot
As a rule, the roots have completely penetrated the pot within two to three years and used up the existing soil. Now it's time to repot so the roots can continue to absorb enough nutrients and moisture. Spring is the best time to do this, perhaps right after the first pruning. After repotting in pre-fertilized soil, do not fertilize again this season!
watering and fertilizing
Potted boxwood should be watered vigorously about once or twice a week, and more frequently in hot weather and during dry periods. Good drainage is a must so that excess irrigation water can drain off and no waterlogging forms. Never water the leaves as this causes fungal diseases such as powdery mildew. In addition, Buchs is one of the rather hungry plants and therefore needs a good supply of nutrients. Fertilize it regularly, if possible with a liquid fertilizer, between April and June. From July, the nutrient supply is stopped so that the fresh shoots can harden for the winter.
hibernate
Basically, the boxwood is hardy, but as a potted plant it needs special protection. Otherwise unsightly frost damage will occur. Place the pot on an insulating base (e.g. made of wood or polystyrene) and press it close to a warm house wall. Here it should be in the shade, as intense solar radiation can cause damage in winter. If necessary, loosely wrap the plant and pot with garden fleece.
Diseases
Unfortunately, the boxwood is quite susceptible to various diseases and pests such as shoot death, wilting, infestation by boxwood moths, plant lice, boxwood flea or spider mites. If the leaves turn brown or yellow, there is always a problem behind it.
tips
Boxwood loves lime, which is why you can water it with normal tap water without any problems.