What type of plants are described as low-growing and suitable for the edges of beds?

Alyssum is classified as a low-growing plant, making it particularly well-suited for edging flower beds and borders. This plant typically forms a dense, spreading mat of small, delicate flowers that bloom in clusters, creating an attractive outline for garden beds. Its compact growth habit helps to define the edges of planting areas, while its fragrant flowers can enhance the overall sensory experience of the garden.

Sedum can also be a ground cover, but it might not be as low-growing or standard for border planting as alyssum, depending on the variety. Sunflowers, on the other hand, are tall, upright plants that are not appropriate for bed edges since they grow significantly in height. Ferns can also vary in growth habit but tend to be more upright and less suitable for low borders compared to alyssum. Thus, alyssum stands out as the ideal choice for creating neat and visually appealing borders in garden design.