Living Covers

Plants That Protect, Enrich, and Transform the Soil Through Living Roots

Living soil covers—often called living mulch—are plants intentionally grown to protect soil, suppress weeds, reduce erosion, and improve overall soil health. Unlike inert or dead mulches, living covers actively interact with the environment. Their roots stabilize soil, increase organic matter, support beneficial organisms, and improve water infiltration. Their leaves shade the soil surface, cool the ground, and outcompete weeds.

Living covers also promote biodiversity, attract pollinators, build soil structure, and reduce the need for external inputs such as fertilizers or herbicides. They are used in edible gardens, ornamental landscapes, orchards, permaculture systems, and even container gardens.

Living soil covers fall into three main categories: groundcovers, cover crops, and edible living mulch. Each type brings its own strengths and works best in different styles of gardens.

Types of Living Soil Covers

1. Groundcovers

Groundcovers are low-growing perennial or annual plants that form dense mats across the soil surface. They are ideal for ornamental beds, pathways, slopes, and areas where long-term, low-maintenance coverage is desired. Once established, groundcovers create a living carpet that suppresses weeds, cools the soil, and prevents erosion while adding visual interest.

Common Groundcovers Used as Living Mulch

  • Creeping thyme Aromatic, low-growing, drought tolerant; excellent between stepping stones or in sunny beds.
  • Chamomile Fine foliage that spreads gently; good for pathways or herb beds.
  • Clover (white, red, microclover) Fixes nitrogen, supports pollinators, and thrives in many soils. Consider using a native clover variety.
  • Ajuga Dense, colorful foliage with spring blooms; thrives in part shade, but can be a bit invasive.
  • Creeping Jenny Fast-spreading groundcover for moist areas that can be invasive; bright chartreuse leaves.
  • Sedum species Succulent groundcovers ideal for dry areas or poor soils.
  • Vinca minor Evergreen, shade-tolerant groundcover that spreads steadily, but can be a bit invasive.

Best Uses for Groundcovers

  • Reducing weeds in perennial beds
  • Filling gaps in ornamental landscapes
  • Stabilizing slopes
  • Cooling soil and reducing evaporation
  • Establishing drought-tolerant carpets in xeric gardens
  • Enhancing biodiversity and habitat

2. Cover Crops

Cover crops are fast-growing plants sown to protect or improve soil between growing seasons or around existing crops. They prevent erosion, fix nitrogen, break up compacted soil, attract beneficial insects, and add organic matter when cut back or tilled in. Cover crops are essential in regenerative gardening, farming, and soil-building systems.

Common Cover Crops

  • Crimson clover Fixes nitrogen and attracts pollinators with bright red blooms.
  • Winter rye Cold-hardy, vigorous, suppresses weeds, and builds biomass.
  • Hairy vetch Nitrogen-fixing vine that enriches soil and improves structure.
  • Buckwheat Rapid-growing summer crop that outcompetes weeds and feeds pollinators.
  • Mustard Biofumigant properties that can suppress soil diseases and pests.
  • Field peas Cool-season nitrogen fixer; improves soil tilth.
  • Oats Quick-growing and easy to terminate; great for fall planting.
  • Alfalfa Deep-rooted legume that mines nutrients and improves subsoil structure.
  • Fava beans Nitrogen-fixing, cool-season legume that produces significant biomass; deep roots improve soil structure.

Best Uses for Cover Crops

  • Rebuilding depleted soils
  • Protecting bare beds in winter
  • Fixing nitrogen naturally
  • Reducing weeds between crop cycles
  • Increasing organic matter in vegetable gardens
  • Feeding soil life and improving fertility

3. Edible Covers (Edible Living Mulch)

Edible covers combine soil protection with food production. These are sprawling or low-growing plants that shade soil, suppress weeds, and retain moisture while providing edible harvests. They are excellent for food forests, permaculture systems, cottage gardens, and any edible landscape looking to maximize productivity and minimize bare soil.

Common Edible Living Mulches

  • Pumpkin or squash vines Large leaves shade soil, suppress weeds, and produce abundant fruit.
  • Sweet potato vines Fast-growing, moisture-retentive, and highly effective at covering ground.
  • Strawberries Low-growing and perennial; protect soil while producing fruit.
  • Low-growing herbs (oregano, thyme) Aromatic, drought-resistant, and great for borders or herb beds.
  • Lettuces or leafy greens used as living mulch Shade soil in summer beds while providing constant harvests.

Best Uses for Edible Covers

  • Food forest understories
  • Between young fruit trees
  • In raised beds and annual gardens
  • Surrounding taller crops like tomatoes or corn
  • In perennial edible landscapes
  • In permaculture guild plantings

Living Soil Covers In Your Garden

Living soil covers offer gardeners a dynamic, renewable, and ecologically rich way to protect soil while improving it at the same time. Unlike inert materials, living covers continually enhance soil health through their roots, foliage, and interactions with soil organisms. Whether you choose perennial groundcovers, fast-growing cover crops, or edible plants that double as living mulch, these systems reduce maintenance, increase biodiversity, and create healthier, more resilient gardens.

With the right living cover in the right location, gardeners can cultivate landscapes that stay protected, productive, and biologically active all year long.