What defines creeping perennials?

Creeping perennials are defined as plants that reproduce through underground structures, such as rhizomes, tubers, or stolons. These structures allow the plants to spread horizontally across the ground, producing new shoots and roots at various points. This characteristic is essential for their growth and spread, as it enables them to establish colonies and survive in a variety of environmental conditions.

In contrast, the other choices do not apply to creeping perennials. For instance, creeping perennials can exist in various climates, not just warm ones. Their life cycle is typically longer than that of annuals or biennials, as they can live for multiple growing seasons. Lastly, defining them as plants that only exist for one season would incorrectly categorize them, as creeping perennials are, by definition, plants that persist for more than one growing season.