bedding plant 
noun
A plant set into a garden bed or container when it is about to bloom, typically an annual used for display and discarded at the end of the season.Use as a bedding plant, container plant, in a mixed border or butterfly garden....
- The most popular plants to grow are annual bedding plants, which produce all of their flowers in one season, and are considered to be the gardener's favorite.
- There will be a large selection perennials, bedding plants, pot plants, shrubs, trees, heathers, containers and planters.