This chapter has a section entitled Bulbs. Although all plants in this section are called bulbs, technically this is not correct. Plants in this section include true bulbs, corms, tubers, and rhizomes.
All bulb-type plants have underground storage parts. Bulb-type plants can survive dormancy without nutrients or moisture. In this sense, they are perennials. Some bulbs are planted once and last for years. Others last only a year or two. Nonhardy bulbs must be planted each spring, dug up in the fall, and stored where they will not freeze.
The web site below contains historical trivia about bulbs. Check out "tulipmania," the story of how 17th century Holland's economy was devastated over a frenzy of tulip bulb trading.
