What types of plants are typically used as annuals in landscaping?

Annuals in landscaping are specifically plants that complete their life cycle within one growing season. This means they germinate, grow, flower, produce seeds, and die all within a single year's timeframe. Gardeners often choose annuals for their vibrant blooms and ability to provide instant color and interest to garden beds, containers, and other landscape features.

Because they complete their life cycle in just one season, annuals are often more adaptable to various growing conditions, allowing for diverse and dynamic landscaping options. By thriving during the warmer months, they can fill gaps in perennial gardens or provide opportunities for seasonal themes in landscaping.

In contrast, other types of plants mentioned in the question do not fit the definition of annuals. Perennials return year after year, while biennials require two seasons to complete their life cycle. Plants that lose leaves each fall typically refer to deciduous perennials, which also do not fit into the annual category. Understanding these classifications is fundamental for anyone involved in landscaping and garden design.