What common category do Hemerocallis, Heuchera, and Hosta fall under?

Hemerocallis (daylilies), Heuchera (coral bells), and Hosta (plantain lilies) are all classified as perennials, which means they are plants that live for more than two years. This category is characterized by plants that usually die back during the winter months and regrow in the spring from their root systems. Perennials can provide stability and long-term beauty in the garden, as they come back year after year, often flowering annually.

In contrast, annuals complete their life cycle within a single year, meaning they germinate, flower, and die all in one growing season, which is not applicable to the plants mentioned above. Grasses are a specific family of plants typically characterized by their narrow leaves and are often selected for different landscape purposes than the blooming varieties listed. Shrubs are woody plants that branch out and can vary greatly in size and form, distinct from the herbaceous nature of the three mentioned perennials.

Thus, these three plants share the common characteristic of being perennials, making this classification the most suitable choice.