Orange Carpet® Hummingbird Trumpet (Zauschneria garrettii cultivar)Orange Carpet® Hummingbird Trumpet (Zauschneria garrettii cultivar)

Great Unknown Groundcovers

By David Salman, Chief Horticulturist

Groundcovers are a great group of garden plants. They create the foundation of an inspiring garden. Consider a nice wood floor or a beautiful area rug that ties a room together in a home and makes all the furniture look even better. Groundcovers create a flowering and foliar carpet for the garden, making all the taller grasses, perennials, and shrubs planted into them look more beautiful. Groundcovers also act as a living mulch, helping to shade the soil and keep plant roots cooler, and helping to reduce weeds when healthy and dense.

Creeping Gray Germander (Teucrium) with Hardy Yellow Ice Plant (Delosperma)

Groundcovers can enhance your garden design with complementary colors. For example, as shown above, the purple flowers of Creeping Gray Germander (Teucrium) contrast with and enhance the bright green foliage and yellow flowers of Hardy Yellow Ice Plant (Delosperma). Spread your wings and try some of these recommendations for groundcovers - including popular varieties such as Delosperma, Thyme, and Speedwell, as well as some great groundcovers that may be new to you. The results will delight!

great unknown groundcovers.

Thyme-Leaf Speedwell (Veronica oltensis) is a popular groundcover.

Evergreen Groundcovers

Thyme-Leaf Speedwell (Veronica oltensis)

Easily mistaken for a creeping thyme, this plant's shiny evergreen leaves are tiny, hence the common name "Thyme Leaf Speedwell. But when this little beauty bursts into flower in early to mid-spring, it becomes a sheet of blue flowers readily distinguishing it from pink flowered thyme. This groundcover is excellent as crack filler between pavers and flagstone, makes an excellent edging plant for pathways and is a good lawn replacement for smaller, hard-to-mow areas. Thriving in sun and part sun, it weaves itself into flower beds and rock gardens. A great companion plant for mid-spring blooming bulbs like miniature Daffodils, Muscari and wildflower Tulips.

Carpeting Pincushion Flower (Pterocephalus depressus)

A native of Morocco, This resilient, evergreen groundcover comes from a high elevation mountain habitat giving the plant has excellent cold hardiness. A close relative of the popular Pincushion Flower (Scabiosa) it grows only an inch tall. In early summer it covers itself with huge, showy mauve-pink flowers, followed by fluffy pink Apache Plume-like seed heads to give it an extended season of color. Deep rooted, with coarse, thick roots, it slowly spreads to make a long-lived garden rug. A slow but steady grower, it is a great plant for small garden areas.

Creeping Shrubby Ice Plant (Ruschia pulvinaris)

A long-time favorite groundcover, this evergreen Ice Plant is an excellent choice for xeric (waterwise) gardens. Only an inch in height, the plant spreads to form a woody mat of gray-green foliage that disappears under a cloud of brilliant magenta flowers in mid-spring. A great nectar plant, hungry native bees and honeybees are quick to visit these early-blooming spring flowers. And unlike its close relative, Delosperma, this succulent species is rabbit resistant, making it a good choice for use as an edging plant along paths and driveways. While cold hardy to USDA zone 6, Ruschia is recommended for fall planting in warmer winter climates in zones 7-10. (Wait for spring in zone 6.)

Gray Creeping Germander (Teucrium Aroanium)

A native of the Mediterranean, Gray Creeping Germander (Teucrium aroanium) grows into a low mound of thin, silver leaves that form a beautiful backdrop for the honey-scented deep lavender-pink flowers that bloom in summer. The plant is an excellent small scale groundcover for hot, sunny sites in well-drained soil. Shear back 1/3 in mid-spring to reinvigorate established plants. Because this plant is very aromatic, it is an excellent choice for a deer and rabbit resistant garden. Looks wonderful when planted with Ice Plant (Delosperma), as shown at the top of the page

Creeping Gold Buttons (Cotula sp. 'Tiffindell Gold')

This tough, deep-rooted groundcover hails from the high elevation Drakensberg Mountains of the Republic of South Africa. I discovered the plant while traveling to South Africa's only alpine ski area, Tiffindell, and have come to appreciate its versatility and vigor in the landscape. It is fast growing and excellent when used as a lawn grass replacement. It has fine-textured, evergreen foliage, a profusion of bright yellow button-shaped flowers in late spring, and tolerance to foot traffic. When planted as a lawn replacement in full to partial sun areas, it can be "deadheaded" with a lawnmower which keeps the foliage looking lush and tidy. Plant on 15" centers to get a dense carpet of flowers and foliage.

Deciduous Groundcovers

Giant Flowered Soapwort (Saponaria lempergii Max Frei)

This Old World hybrid wildflower hails from the mountains of Europe and is an excellent groundcover for sun and partial shade. Blooming for a month or so in late spring, the plants cover themselves with a carpet of bright pink flowers. This long-lived plant provides the garden with years of dependable ground coverage and flowers. I've had the same patch in my garden for over 25 years! Very deep-rooted once established, it is surprisingly drought tolerant (xeric). Soapwort also has excellent cold hardiness and is a great choice for fall planting.

Orange Carpet® Hummingbird Trumpet (Zauschneria garrettii cultivar)

My first new plant introduction from 1996, Orange Carpet® is still one of my favorites, and one that has not been improved upon since! As its name implies, this Hummingbird Trumpet is a large-scale spreading groundcover, unlike other varieties of Zauschneria which are tall up-right growers. Blooming in mid-summer, it covers itself with a profusion of long, bright orange trumpets that attract hummingbirds. An excellent choice for cascading over the edge of a raised bed or sloping area, give it average water during the growing season to keep it lush and vigorous. Wait until spring to cut it back so as not to cause desiccation during dry winters. (Also known as Fire Chalice).

Tips For Planting Groundcovers

When planting groundcovers, I always recommend using them in groups of 5 or 7 at the minimum to create larger patches of the plant and maximize the impact and beauty of the flowers and foliage.

Use Mature Width For Planting Guidance: On our website, you'll see listed as the second measurement, the groundcover's mature width. If it spreads to 15-18" wide, plant them 15" apart. This will help you create a solid carpet of groundcover. Want quicker coverage? Plant them a bit closer than their mature spread.

Planting Perennials With Groundcovers: Most importantly, taller growing plants can be transplanted right into a new groundcover area or into established patches of groundcovers. Groundcovers tend to have more horizontal growing root systems that won't compete with the deeper roots of flowering bulbs and taller perennials.

Explore High Country Gardens Groundcovers