ABSTRACT
For this chapter, the word “bulb” is used in its botanical sense of a storage organ made up of leaves or leaf bases modified to provide storage tissue. More loosely, the word is used horticulturally to include other storage organs — corms, tubers, rhizomes — which are modified shoots, roots or hypocotyls, or combinations of these organs. Sometimes the distinction between bulbs and other storage organs is unclear, because storage tissue occurs in both stem and associated scale leaves.
