The terms Bulbs, Corms, Tubers, Tuberous Roots, and Rhizomes are often used interchangeably at nurseries but this is not really correct. Each one is quite different, although for the most part they are planted and cared for in similar manners. Compare the definitions below with diagrams presented in class. Bulbs a collection of underground leaves, modified for food storage.
All bulbs are monocots.
Examples include lilies, daffodils, onions, tulips, and hyacinths. Corms underground stems, modified for food storage. Examples are crocus and gladiolus. Planting is the same as for bulbs. Tubers underground stem tips, modified for food storage.