A special subset of perennials are plants that form [[bulb (plant)|bulb]]s or [[tuber]]s, where all the energy for the next year's growth is stored in a large underground organ (the bulb), which is exhausted and then replenished or reformed over the course of each growing cycle. The most familiar examples of these are [[tulip]]s and [[daffodil]]s (bulbs), and [[potato]]es (tubers). | A special subset of perennials are plants that form [[bulb (plant)|bulb]]s or [[tuber]]s, where all the energy for the next year's growth is stored in a large underground organ (the bulb), which is exhausted and then replenished or reformed over the course of each growing cycle. The most familiar examples of these are [[tulip]]s and [[daffodil]]s (bulbs), and [[potato]]es (tubers). |