Plants need the sun to survive. When the sun is not available, plants can go into a dormant state and go through a process called vernalization. This allows plants to remain green during winter months when the sunlight is scarce.
The following are some plants that do not require sunlight for vernalization:
Aloe vera, Amaryllis bulbs, Banana trees, Cacti, Croton plants, Daffodils, Jasmine flowers and Penstemon species.