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True Bulbs
A true bulb has a fully formed plant within the bulb. If you were to slice open a tulip bulb vertically, for example, you'd see a small baby tulip with flowers, stems, leaves and roots! ...
True bulbs - Energy stored in modified leaves, called scales. Examples include onions, lilies, daffodils, and tulips.
Corms - Energy stored in a modified, swollen stem. Examples include crocus and gladiolas.
This class of plant consists of true bulbs, corms, rhizomes, tubers and tuberous roots. True bulbs (daffodils and tulips) have an internal flower bud surrounded by layers of food supply.
There are several types of these structures; true bulbs, corms, tubers, tuberous roots and rhizomes. Considerations for choosing bulbs should include; quality, location, light, and quantity.
To be botanically accurate, not all of these are true bulbs; some are corms, tubers, or rhizomes.
Technically, these are not "true bulbs," because they don't contain a tiny flower and stalk inside of them. Instead, the plants grow from bulblike structures known as corms (gladiolus), tubers (dahlia, caladium), and rhizomes (canna).
True bulbs have a basal plate at the bottom which houses all of the dormant buds of the bulb and from which the roots emerge as well.
For the purposes of this page, all the bulb listings attached will be referred to as bulbs, although some of them are not true bulbs.
However, rather than growing from true bulbs, alstroemerias grow from thick, brittle roots. In the garden the roots spread outward, forming colonies.
All geophytes - whether true bulbs, corms, rhizomes or tubers - have one thing in common: They all require a dormant period. Depending on the geophyte, that period will be either summer or winter.
The collective term "bulb" includes different storage structures such as corms, tuberous roots, rhizomes and true bulbs.
The bulb itself serves as a storage organ. While not all spring blooming bulbs are true bulbs, most underground storage organs, including rhizomes, corms, tubers and pips are collectively called "bulbs".
holds the food storing scales together, and new roots will sprout from the outside edge of the basil plate once the bulb ends its dormant period and begins its growth cycle. Daffodils, Hyacinth, Lily, Tulips and Onions are what are called True Bulbs.
 See also: Flower, Plant, Bulb, Tuber, Tuberous
  
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