The practice of planting low-growing ground covers between stepping stones or pavers integrates hardscape elements with the natural garden environment. This technique, often called crevice gardening, serves both aesthetic and practical purposes. Introducing greenery softens the rigid lines of stone or concrete, lending an established, organic feel to a path or patio. These strategically placed plants help stabilize the soil, prevent erosion, and suppress weed growth by occupying open spaces.
Functional Requirements for Pathway Plants
The unique environment between pavers demands plants with specific biological traits for survival. A primary requirement is tolerance to foot traffic, ranging from occasional light use to moderate daily passage. Plants must possess a robust structure that allows them to spring back quickly after compression without permanent damage. Furthermore, the ideal pathway plant must maintain a low-growing habit, typically maturing at less than four inches, to avoid creating trip hazards.
The root structure is also a significant consideration for plants growing in narrow crevices. Shallow, fibrous root systems are preferred because they anchor the plant securely without the risk of shifting or lifting the surrounding paving stones. Since pavers are often set over a base of compacted soil, the chosen species must tolerate lean soil conditions with excellent drainage. These specialized ground covers thrive in the sharp drainage provided by the stone setting, which prevents root rot that occurs in constantly moist soil.
Durable Plants for Sunny Walkways
Walkways exposed to full sun require tough, heat- and drought-tolerant plants that can handle high temperatures and trampling. Creeping Thyme (Thymus serpyllum) is a premier choice, known for its dense, mat-forming habit and resilience to heavy foot traffic. Varieties like ‘Elfin’ thyme grow exceptionally flat. ‘Woolly’ thyme (Thymus pseudolanuginosus) features soft, fuzzy foliage that releases a pleasant, herbal scent when stepped on, turning a simple walk into a sensory experience.
Another excellent sun-loving option is Sedum, or Stonecrop, particularly the low-growing, creeping varieties. These succulents store water in their fleshy leaves, making them highly resistant to drought and heat. Cultivars such as ‘Dragon’s Blood’ or ‘Blue Spruce’ form dense mats of colorful foliage that offer year-round interest between stones. Low-growing Chamomile (Chamaemelum nobile) is also suitable for sunny, well-drained paths, forming a soft, moss-like carpet. When crushed, its foliage releases a subtle, apple-like fragrance.
Ground Covers for Shaded Paths
Shaded pathways demand plants that prefer cooler, moister conditions but still tolerate foot traffic. Irish Moss (Sagina subulata) and Scotch Moss (Sagina subulata ‘Aurea’) are popular choices that create a lush, velvety carpet appearance. Although not true mosses, these plants form dense cushions of miniature foliage that are soft underfoot and tolerate moderate treading, provided they remain consistently hydrated. They are often sold in flats, making them easy to cut and fit precisely into the gaps.
For areas with deeper shade, miniature Mondo Grass (Ophiopogon japonicus ‘Nanus’) is a superb evergreen option that provides a fine, grassy texture. It grows slowly, forming neat, dark green tufts approximately two inches tall that are extremely durable and withstand regular foot traffic. Another shade-tolerant plant is Ajuga, or Bugleweed, specifically the low-growing cultivars that spread by runners. Selecting the flattest types is important to prevent them from becoming a tripping hazard, despite the attractive bronze or variegated foliage and blue flower spikes of some varieties.
Preparing the Space and Ongoing Maintenance
Successful establishment begins with proper preparation of the planting space, often involving amending the soil within the gaps. Stepping stones are typically set on a compacted base that lacks the organic matter necessary for sustained plant growth. It is beneficial to remove loose sand or gravel and replace it with a mixture of native soil and compost to create a suitable planting medium, ensuring a depth of at least three to six inches for root development.
When planting, young plants should be divided into small chunks or plugs, often using scissors or a knife to separate the root ball. This allows them to be tucked securely into the narrow crevices. The goal is to ensure the roots are firmly settled against the soil, with the foliage level with or slightly below the stone surface. Initial care focuses on consistent watering to encourage the roots to spread. Long-term maintenance involves occasional trimming or shearing to prevent encroachment onto the stone surfaces, which maintains a neat appearance and encourages denser growth.