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There are many techniques that can be implemented to obtain more specimens starting from the bulbs available: in addition to the production starting from the seeds, in fact, the multiplication capacity of the bulbs themselves can be exploited. Cultivation from seed takes three to five years to reach flowering: after harvesting the seeds from the infructescences, keep the seeds in a cool, dry logo until sowing. Autumn is the best time for sowing, but as soon as the seed is available it can be sown early. The soil where it is planted must be composed of peat and sand. The seeds should be planted about 5 mm from each other and kept at a temperature of 21 ° for 6-8 weeks. During the vegetative season the main bulbs in turn form some bulbs inside the tunic, or bulbils on the stems. During dormancy separate the bulbs from the main bulb, uprooting the original stumps, cleaning up the soil and sprinkling the bulbs with fungicide. Then transplant them in rows equal to their size in moist soil and let them grow for two growing seasons, then transplant them outdoors. Carry out the same operations with the bulbils that you will detach from the stems of the mother plant in late summer, bearing in mind that the bulbils need to be covered with a lot of soil. A similar operation can be performed with the corms that form inside the parent bulbotubero: detach them from the parents before the start of the vegetative period, then treat them as bulbs.
It is not necessary to use a complete bulb to obtain flowering: if the bulbs have a concentric scale structure, you can remove the outermost ones from the parent bulb, after having uprooted it in the autumn before root growth begins. Clean the flakes and sprinkle them with fungicide powder then store them in a bag with peat and perlite for three months at a temperature of 21 °. Then in the fridge for 6-8 weeks until bulbs form from each scale. Then place the bulbs in very draining soil until the final repotting. Finally, let's consider the multiplication by “chipping”, that is the cutting of the bulb: when the foliage withers cut the apex of the roots then cut it in half from top to bottom. Divide each half obtained in the same way, until you get 16 "cloves", which you will immerse in a fungicide solution for 115 minutes. Then put them in a bag with vemriculite and place them in a warm and dark place. When the bulbs appear at the base of the clove, remove them and repot them in the soil. You will get the same result by digging the base of a bulb with a pointed spoon, and then placing it on a tray full of sand and soil until the first bulbs appear on the excavated surface.