Garden

Garlic - Allium


GeneralitŠ°


The genus allium has more than a thousand species, most of which are found in the northern hemisphere; also garlic, onion and leek belong to this genus; however, there are varieties cultivated for their decorative inflorescences. They have ribbon-like foliage, usually thin and arched, light green in color, sometimes streaked with white; the inflorescences are of various types, spherical, fan-shaped or umbrella-shaped; they enclose small star-shaped flowers that bloom from late spring until late summer; in general the flowers are in shades of pink, white, yellow and blue.
Cultivation is very easy and the bulbs are suitable for growing; the flowers bloom on long stems, from 20 to 100-120 cm high, and can be cut or dried for winter compositions. We recall Allium cristophii with large spherical inflorescences, with a diameter close to 20 cm, and flowers of a metallic blue color; Allium beesianum, small blue inflorescences; Allium schenoprasum, the common chive, with small pinkish inflorescences; Allium triquetum, with white flowers, in umbrella-shaped inflorescences. Many of the ornamental varieties emanate, from the foliage or from the bulbs, the typical smell of garlic or onions.

As for watering, the allium tends to be satisfied with the water provided by the rains; during flowering it may be necessary to water in case of prolonged dry periods.Ground


The ideal soil for the cultivation of garlic must be soft but above all well drained. To avoid compact soils that would cause the formation of water stagnations. The cultivation in pot instead of the one in the ground is indifferent when a type of soil is chosen that conforms to the needs of the plant. If the bulb is planted on a container, it is also possible to use universal soil.

Multiplication



The multiplication takes place by seed, or by taking the bulbils that are produced near the main bulbs; some garlic species also produce bulbils near the inflorescences.

Garlic - Allium: Pests and diseases


Among the diseases and parasites that can affect the allium plant we recall the main ones. First of all, downy mildew that we can easily recognize due to the numerous white-greyish marks that appear on the leaves. When humidity is high in the environment in which we find our seedling, mold will also form on these whitish spots. The immediate consequence of this disease is the rot of the garlic leaves. To avoid the formation of the downy mildew, it is sufficient to water the plant with the appropriate modalities required by the plant without exaggeration and to avoid water stagnation.
Another problem is given by the aspergillus, a fungus that also causes the rot of the plant and the appearance of a yellow powder with black dots. Also due to fungal attacks, garlic can be affected by rust with the consequent formation of yellow spots on the leaves.