What are some popular types of groundcovers for rock gardens?

In a rock garden, selecting the right groundcover is essential for creating an attractive and well-balanced landscape. Groundcovers serve multiple purposes such as preventing soil erosion, suppressing weed growth, and adding visual interest to the space. Here are some popular types of groundcovers that are suitable for rock gardens:

1. Creeping Thyme

Covering the ground with beautiful, small, and fragrant leaves, creeping thyme is a perfect choice for rock gardens. It grows low to the ground, spreading horizontally, and produces tiny flowers during the blooming season, creating a colorful carpet that contrasts well with the rocks. Creeping thyme is drought-tolerant and requires minimal maintenance, making it an ideal groundcover for rock gardens.

2. Mazus Reptans

Mazus Reptans is a fast-spreading groundcover that forms dense mats of green foliage. It produces small, trumpet-shaped flowers in shades of blue or purple, which add a splash of color to the rock garden. This groundcover thrives in moist soil and partial shade conditions, making it suitable for areas with poor drainage or shaded spots in the garden.

3. Sedum

Sedum is a versatile groundcover that comes in many varieties, suitable for different rock garden designs. It is a low-growing succulent with fleshy leaves and star-shaped flowers in various colors. Sedum is drought-tolerant and can withstand poor soil conditions, making it a great choice for rock gardens with limited water access or less fertile soil.

4. Creeping Phlox

Creeping phlox is a popular groundcover due to its vibrant and abundant flowers. It spreads quickly and produces carpets of colorful blooms in spring. Creeping phlox is easy to grow and thrives in full sun conditions, making it an excellent choice for sunny rock gardens.

5. Dianthus

Dianthus, commonly known as pinks or carnations, is a versatile groundcover with beautiful, fragrant flowers. It offers a wide range of colors and forms, adding visual interest to rock gardens. Dianthus prefers well-drained soil and full sun exposure, making it suitable for rock gardens with good drainage and ample sunlight.

6. Irish Moss

Irish moss, also known as pearlwort, is a low-growing groundcover that forms dense mats of lush, green foliage. Despite its name, it is not a moss but a perennial plant. Irish moss produces tiny white flowers during the blooming season and thrives in shady areas with moist soil. It is an excellent choice for adding texture and a touch of green to rock gardens.

7. Ice Plant

Ice plant, also known as Delosperma, is a drought-tolerant groundcover that offers colorful and fleshy foliage. It is a low-growing succulent with bright flowers that bloom in shades of pink, orange, yellow, or purple, depending on the variety. Ice plant can spread rapidly and cover large areas, making it ideal for rock gardens with open spaces that need to be filled.

8. Woolly Thyme

Woolly Thyme is a hardy groundcover that adds texture and interest to rock gardens. It has soft, fuzzy leaves that create a playful and unique look. Woolly thyme is drought-tolerant and low-maintenance, making it an ideal choice for dry and rocky areas. It forms a dense carpet, preventing weed growth and providing a cohesive look to the rock garden.

9. Corsican Mint

Corsican mint is a low-growing groundcover known for its strong mint scent and tiny, delicate leaves. It forms a dense carpet of green, making it suitable for filling gaps between rocks in the garden. Corsican mint thrives in shade and moist soil conditions, providing a refreshing and aromatic addition to rock gardens.

10. Blue Star Creeper

Blue Star Creeper, also known as Laurentia, is a low-growing groundcover with delicate blue flowers. It spreads quickly and forms a dense mat of bright green foliage. Blue Star Creeper is suitable for rock gardens as it can tolerate light foot traffic and is pet-friendly. It thrives in well-drained soil and prefers full sun or partial shade.

When selecting groundcovers for your rock garden, consider factors such as the specific growing conditions, maintenance requirements, and overall design aesthetic. Combine various groundcovers to create a diverse and visually appealing landscape that enhances the natural beauty of the rocks.


In conclusion, rock gardens can benefit from a variety of groundcover options, each offering unique characteristics and visual appeal. Whether you choose creeping thyme, Mazus Reptans, sedum, creeping phlox, dianthus, Irish moss, ice plant, woolly thyme, corsican mint, or blue star creeper, the right groundcover will complement the rocks and create a harmonious and picturesque rock garden.

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