Which plant is known for its use in ornamental gardening and belongs to the Sedum genus?

Stonecrop, which belongs to the Sedum genus, is well-known for its versatility and ornamental appeal in gardens. This group of succulents is characterized by its fleshy leaves and ability to thrive in a variety of conditions, making them popular among gardeners. Stonecrops are appreciated for their drought resistance and can be used in rock gardens, groundcovers, and container plantings.

In contrast, Little Bluestem is a native grass that does not belong to the Sedum genus and serves different roles in landscaping, primarily for its ornamental grass qualities and as a habitat for wildlife. Caladium, known for its colorful foliage, is a tropical plant typically used for its vibrant leaves rather than its hardiness or drought resistance. Thyme, while useful in herb gardens and occasionally as ground cover, does not belong to the Sedum genus and is primarily valued for culinary purposes.

Thus, the correct identification of Stonecrop as the representative plant of the Sedum genus emphasizes its significance in ornamental gardening.