Best Groundcovers for Filling Voids in Your Garden

A well-designed garden is not only about the plants that tower gracefully or bloom spectacularly but also about the spaces in between. Voids or empty patches in your garden can disrupt the flow of your landscape, making it appear unfinished or neglected. Groundcovers are an excellent solution to this problem, offering a lush, green carpet that fills gaps, suppresses weeds, and enhances garden aesthetics. In this article, we explore the best groundcovers to fill voids in your garden, considering factors such as climate adaptability, maintenance, growth habit, and visual appeal.

Why Use Groundcovers?

Before diving into specific plants, it’s important to understand the benefits of using groundcovers:

Weed Suppression: Dense groundcovers limit sunlight reaching weed seeds, reducing their germination.
Soil Erosion Control: Groundcovers stabilize soil on slopes and prevent erosion.
Low Maintenance: Once established, many groundcovers require minimal care compared to lawns or flower beds.
Aesthetic Appeal: They add texture, color, and variety to garden beds and pathways.
Habitat for Beneficial Insects: Some groundcovers attract pollinators and predatory insects that help control pests.

With these benefits in mind, choosing the right groundcover depends largely on your garden’s conditions, including sunlight exposure, soil type, moisture levels, and local climate.

Best Groundcovers for Sunny Areas

1. Creeping Thyme (Thymus serpyllum)

Creeping thyme is a fragrant, hardy herb that thrives in full sun and well-drained soil. It forms a dense mat of tiny oval leaves with purple or pink flowers blooming profusely in summer.

Growth habit: Low-growing (2-3 inches), spreading up to 12 inches wide.
Advantages: Drought-tolerant, attracts bees and butterflies; withstands light foot traffic.
Uses: Perfect between stepping stones or rock gardens.
Maintenance: Minimal watering once established; occasional trimming after flowering keeps it tidy.

2. Sedum (Stonecrop)

Sedums are succulent plants that tolerate dry conditions and poor soils. Varieties such as Sedum acre or Sedum spurium are ideal as groundcovers in sunny locations.

Growth habit: Low mats 2-6 inches tall.
Advantages: Extremely drought-tolerant; vibrant foliage colors ranging from green to red.
Uses: Ideal for rockeries, borders, or filling bare patches.
Maintenance: Very low; prune back dead stems in early spring.

3. Creeping Phlox (Phlox subulata)

Known for its vibrant spring blooms in pinks, purples, and whites, creeping phlox spreads rapidly over sunny slopes and beds.

Growth habit: Low-growing (4-6 inches), spreading up to several feet.
Advantages: Showy flowers brighten spring gardens; evergreen foliage maintains winter interest.
Uses: Great for slopes or foundation plantings.
Maintenance: Requires well-drained soil; pruning after flowering encourages denser growth.

Best Groundcovers for Shady Areas

4. Sweet Woodruff (Galium odoratum)

Sweet woodruff is a shade-loving perennial with delicate white star-shaped flowers and whorled bright green leaves. It thrives under trees or in woodland gardens.

Growth habit: Spreads quickly via rhizomes forming a dense carpet about 6-12 inches tall.
Advantages: Fragrant leaves; effective weed barrier; tolerates moist soils.
Uses: Under trees, along shaded borders or pathways.
Maintenance: Low; may need control if spreading aggressively.

5. Pachysandra (Pachysandra terminalis)

Pachysandra is a classic evergreen groundcover for deep shade with glossy green leaves and inconspicuous white flowers.

Growth habit: Forms dense mats about 6-12 inches tall.
Advantages: Tolerates heavy shade and various soils; deer resistant.
Uses: Foundation plantings, shaded woodland areas.
Maintenance: Minimal; prune occasionally to remove old stems.

6. Lamium (Lamium maculatum)

Lamium offers attractive silver-edged foliage and small flowers in shades of pink, purple, or white that bloom through spring and summer.

Growth habit: Spreading mat around 6 inches tall.
Advantages: Tolerates dry shade better than many ground covers; deer resistant.
Uses: Shaded borders or containers.
Maintenance: Remove dead foliage to keep tidy.

Best Groundcovers for Moist or Wet Soils

7. Japanese Spurge (Pachysandra procumbens)

This species prefers moist but well-drained soils often found near streams or shaded garden spots.

Growth habit: Spreads via runners forming a dense carpet about 6 inches tall.
Advantages: Tolerates wet soils better than Pachysandra terminalis; interesting mottled leaves.
Uses: Understory plantings near water features.
Maintenance: Low maintenance once established.

8. Marsh Marigold (Caltha palustris)

Marsh marigold thrives in very wet areas such as pond edges or bog gardens.

Growth habit: Clumping perennial growing 6 to 18 inches tall with glossy leaves and bright yellow flowers in early spring.
Advantages: Adds color to damp spots where few plants grow well.
Uses: Along streamsides or wet depressions in the garden.
Maintenance: Minimal care if moisture levels remain constant.

9. Creeping Jenny (Lysimachia nummularia)

Creeping Jenny is a vigorous groundcover favored for its bright chartreuse foliage that contrasts well with darker plants.

Growth habit: Rapid spreading mat up to 2 inches tall with trailing stems.
Advantages: Thrives in moist soils; tolerates sun to partial shade; easy to control by trimming back runners.
Uses: Around ponds or moist beds; cascading over walls or containers.
Maintenance: Regular trimming recommended to prevent overgrowth.

Best Drought-Tolerant Groundcovers

10. Blue Star Creeper (Isotoma fluviatilis)

Blue star creeper forms a low mat of tiny leaves covered with star-shaped blue flowers in summer.

Growth habit: Spreads slowly forming a carpet about 2 inches tall.
Advantages: Tolerates drought once established; can handle light foot traffic.
Uses: Between pavers or as lawn replacement in sunny areas with good drainage.
Maintenance: Very low water demands post-establishment.

11. Ice Plant (Delosperma cooperi)

Ice plant is a succulent groundcover known for its vibrant magenta flowers and silver-green fleshy leaves.

Growth habit: Low-spreading (4–6 inches), frost-tender but drought tolerant during growing season.
Advantages: Excellent for rock gardens and dry sunny slopes; colorful blooms attract pollinators.
Uses: Xeriscaped gardens and poor soils with excellent drainage.
Maintenance: Minimal watering needed after establishment; avoid wet winters where it may rot.

Tips for Choosing and Planting Groundcovers

Assess Your Site Conditions Thoroughly: Determine sunlight levels (full sun, partial shade, deep shade), soil type (clay, sandy, loamy), moisture availability (dry, moist, wet), and exposure (windy or sheltered).
Consider Growth Rate: Fast-growing groundcovers can fill voids quickly but may require more frequent maintenance. Slower growers provide long-term stability with less effort once established.
Watch for Invasiveness: Some aggressive species can escape their bounds and crowd out native plants. Choose carefully according to your region’s guidelines.
Think About Maintenance: Less maintenance means less time spent gardening—choose plants that fit your lifestyle preferences.
Group Plants by Similar Needs: Combining plants with similar water and light requirements helps ensure all thrive together without extra work.
Prepare the Soil Well: Remove weeds thoroughly before planting groundcovers; loosen soil and amend with compost if necessary to promote healthy root growth.
Plant at the Right Time: Early spring or fall are ideal times to establish most groundcovers so they acclimate before extreme weather arrives.
Water Adequately Initially: New plantings need consistent moisture until roots develop firmly into the soil.

Conclusion

Groundcovers are indispensable allies for gardeners seeking to fill empty spaces without resorting to frequent replanting or heavy maintenance lawns. Whether you need a drought-resistant carpet of color for sunny slopes or a lush green blanket beneath shady trees, there is a perfect groundcover suited for your garden’s unique needs. By carefully selecting plants based on site conditions and personal preferences—and following best planting practices—you can create an eye-catching landscape that flows seamlessly from one area to the next while reducing weeds and erosion around your home. Start small if you wish but watch as your garden transforms into a verdant mosaic filled with texture and life at every level.