Bulbs, corms or tubers?


Most people don’t know that there are bulbs, corms, tubers and rhizomes. They are all referred to as ‘bulbs’, which isn’t actually that surprising. After all, they’re often planted at the same time of the year, and bulbs, corms and tubers all look rather similar when you buy them as unplanted items in a bag or box.


All bulbs, corms and tubers store nutrients so that they can grow and produce flowers once they are planted in the soil. A rhizome looks different, but this is a swollen underground stem that usually grows horizontally. The end of the rhizome often bends upward to produce a new plant.

Tulip: a bulb

Dahlia: a tuber

Lily of the Valley: a rhizome