...Twin-scaling is practiced by professional growers and skilled amateurs to increase bulbs that would naturally propagate very slowly, or to speed up the production of desirable cultivars. Using twin-scaling it is possible to multiply one bulb into 16 to 32 (or more) viable bulbs in a couple of years, whereas natural propagation might only lead to a doubling every two years or so. It is one of a number of propagation techniques (such as "scooping", "scoring" and "chipping") based on the fact that an accidentally damaged bulb will often regenerate by forming small bulblets or bulbil on the damaged surface. Commercial growers have obtained as many as 100 twin-scales from a single bulb. Read full entry

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