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Different plant forms are commonly called bulbs, which differ according to their shape. Their appearance is similar to spring onions, although in reality they are real plants. We see some substantial differences.
The Bulbs are real plants, albeit modified and in miniature. They are in fact provided with a very short stem (called "disco" or "girello"), leaves (the "catafilli") wrapped around the gem, and roots. In the "tunicate bulbs, the outer catafilli have a paper consistency, while those closer to the bud are fleshy and contain the reserve substances destined to sustain the bud itself when it develops and give life to leaves and flowers. The" scaly bulbs "such as lilies instead, they are made up of thickened and triangular scales arranged like an overlapping one another.They are bulbous flowers, for example, hyacinths, amaryllis, scillae, narcissus, tulips.
Tubers and rhizomes
The Tubers: they are underground stems that contain a fleshy part, a fundamental part in which the reserve substances are stored. They have a rather flat shape, compact and solid, they look a lot like our potatoes to which sprout external gems; at the vegetative restart the roots and the aerial parts of the stem develop. Anemones, begonias and naturally tuberoses are classified as tubers.
The rhizomes: they have a shape of elongated thickened stems and their underground development can develop also on the surface. The buds, which sprout at the ends of the rhizomes, grow horizontally, which contributes to the formation of a new portion which is opposed by the other end that will be lost because it has aged. Lilies of the valley, water lilies and some iris species are rhizomes.
The Corms Or Bulbs-Tubers: They are small tubers wrapped in their outer part by papyrus leaves. In the center we find the gem, which then develops the aerial part, while in the lower part develops the root apparatus to which also the formation of bulbils follows which, once detached from the "mother" will give life to new plants. Gladioli and freesias belong to this type.
An abundant watering is important after planting the bulb, followed one month later by a second, provided it has not yet rained. During winter they will be suspended and at the arrival of spring the clods of soil will be wet again.
After their flowering they can opt to extract the bulbs from the ground or in some cases leave them buried. There are no major problems for anemones, snowdrops, daffodils and muscari: it is possible to always leave them at home provided they respect their vegetative rest, that is, reducing irrigation after the plants have lost their leaves.
Tulips and hyacinths
Instead, with regard to the bulbs of tulips and hyacinths, used to adorn flower beds that host other species of flowers depending on the season, the advice is to extract the bulbs from the ground, since these species are little constant in flourishing from year to year. Tulips and hyacinths need to rest in cool and dark places, in complete drought, to avoid the onset of mold. After the withering of the leaves the bulbs must be extracted from the ground, and left to dry by spreading them in a place sheltered from the sun and well ventilated. Apply a pesticide powder to protect them from mold or fungus. They can then be stored in paper bags or boxes and stored in a cool, dry place.