Looking for a groundcover that's dense and durable? A groundcover that lies flat, hugging the soil? A groundcover that performs like a rug you can walk on? Consider Dymondia margaretae, also known as Silver Carpet.

 

This plant's foliage is unique and attractive with narrow leaves in a color combination of bluish-gray and green. Leaves are hairless on top, curling up on the edges to reveal a silvery-white fuzzy underside giving Dymondia a variegated appearance. From spring to summer, little daisy-like yellow flowers randomly bloom.

 

Curious about this charmer, I spent a couple of hours following rabbit tracks trying to unearth substantive information about the Dymondia only to discover little available about this intriguing evergreen perennial. One thing for sure, this groundcover is considered endangered, risking extinction in its native habitat since it is known to exist in the wild at only five locations worldwide.

 

According to San Marcos Growers in Southern California, Dymondia was introduced to them in 1985 by John Bleck, who was the manager of UC-Santa Barbara Biology Greenhouses at the time. The plant bears the name of Miss Margaret E. Dryden-Dymond, the horticulturist who first discovered it beside a road along the western Cape of South Africa in the Bredasdorp District. During this 1933 expedition for the Kirstenbosch National Botanical Garden, she collected the first plant to document and study. 

Today, Silver Carpet is a popular well-known landscape favorite —, especially in California. Showcased in coastal gardens, used as a border for walkways, a filler between pavers and a soil retainer on slopes, this plant thrives in full sun with little water once established. While Dymondia tolerates both heat and light frost, temperatures below 28∘ F can be fatal.

This “you can step on it” groundcover spreads by offsets from a multi-branched rhizome. Initially, growth is slow and some watering is necessary, which eventually can be reduced to a once-a-week deep soak. As with succulent propagation, this plant propagates by cuttings during its late winter-early spring growing season.

 

Dymondia prefers well-drained soil. But unfortunately, gophers prefer Dymondia to grass. So if you replace your lawn with this groundcover, keep your eye open for these critters with an appetite for tender roots.

 

For further information about the low water use of Dymondia, visit:
https://inlandvalleygardenplanner.org/plants/dymondia-margaretae/