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Artemisia arborescens is a medium-sized, evergreen shrub, native to the Mediterranean area; reaches 90-100 cm in height. The foliage is finely engraved, gray-green in color, soft to the touch, reminiscent of lavender, and strongly aromatic if wrinkled. The shrub is roundish, very branched, with numerous erect stems; at the apex of the branches, in spring, small yellow flowers bloom. After flowering it is good to practice good pruning, especially by shortening the branches that have bloomed, to maintain a dense and compact shrub. There are varieties of compact development on the market, and some that do not produce flowers. The flowers are scarcely decorative, while the foliage is very particular and showy, and remains pleasant throughout the year. The flowers are used in herbal medicine, the foliage is edible, with a pungent and aromatic taste.
Artemisia arborescens plants prefer sunny positions, but can withstand short periods of semi-shading. These plants are moderately rustic and can develop even with temperatures reaching -4 ° C. They do not fear the cold and can withstand short frosts; in case of intense frost it can happen that the apex of the branches is ruined, in this case after the winter, in the spring period we proceed to a pruning that serves for the removal of the damaged stems.
Generally, the shrubs of Artemisia arborescens, which have long since settled, can easily withstand even long periods of drought.
When a plant of artemisia has just been planted, it is advisable to proceed regularly with watering, until the plant is well stabilized and has begun to enlarge its roots in the ground.
It is important to check that the soil maintains the right degree of humidity but does not present the formation of water stagnation, a phenomenon that can be dangerous for the health of the plant, causing also root rot.
Artemisia arborescens plants prefer fresh and deep soils, which present excellent draining characteristics; to make this happen, it is advisable to prepare a soil composed of a part of sand or pumice stone.
It is important to check that dangerous water stagnations do not form which could compromise the base of the plant, creating serious problems.
As for the multiplication of this variety, in spring it is possible to sow small greyish seeds; during the summer semi-woody apical cuttings are taken, which must be rooted in a mixture of peat and sand in equal parts. Let us remember that the rooting soil should be kept in a shady and humid place, until the roots develop, as the cuttings tend to dry out very quickly.
Artemisia - Artemisia arborescens: Pests and diseases
Generally, being a rather rustic plant, the artemisia is not affected by pests or diseases. At the end of the winter season it is however possible to intervene with specific broad-spectrum products that will allow you to protect your plants from possible attacks by pests and diseases. It is good to intervene without exceeding with the use of chemical products, which could alter the environment in which this variety grows.