Bedding plants are often used to give a splash of color to your landscape. These plants, which can be annuals, perennials or biennials, can be grown from seeds in the ground or in containers. Most bedding plants are annuals. They are transplanted outdoors after all the danger of frost has passed and are often massed together for a visual impact. Some important bedding plants are impatiens, marigolds, ageratum, pansies, and petunias.