6 Plants That Naturally Help Keep Weeds Out of Your Garden

Natural Ground Covers That Fight Weeds

Keeping your garden looking lush and weed-free can be quite a challenge. While mulch and fabric barriers have their place, incorporating certain plants that naturally suppress weeds offers an attractive and eco-friendly solution. These plants grow densely to shade the soil and compete for resources, which makes it tough for weeds to get established.

Here are six plants that are especially effective at keeping weeds at bay, perfect for landscape contractors and garden centers looking to recommend smart, natural weed control options.

Creeping Thyme

This low-growing perennial forms a thick, fragrant mat that blocks sunlight from reaching weed seeds. It's ideal for filling spaces between stepping stones, along pathways, or in rock gardens. As a bonus, creeping thyme produces tiny purple flowers that attract pollinators like bees, adding a splash of color and life to any garden.

Lady's Mantle

Known for its soft, velvety leaves and delicate yellow-green blooms, Lady's Mantle naturally forms dense clumps that crowd out weeds. Its broad leaves also shade the soil, helping retain moisture and further discouraging weed growth. It performs well along garden borders, in cottage-style gardens, and mixed perennial beds.

Buckwheat

This fast-growing annual cover crop is a favorite for gardeners wanting to improve soil health along with weed suppression. Buckwheat quickly shades the ground, preventing weed seeds from sprouting while enhancing soil structure and attracting beneficial insects. It’s especially useful as an off-season cover in vegetable gardens.

Sweet Potato Vine

Ornamental sweet potato vine creates vibrant, lush ground cover that blocks weed growth by shading the soil. Its vigorous vines also help reduce soil temperature and erosion while adding eye-catching foliage to garden beds or containers. It thrives in sunny spots and is a colorful choice for borders or hanging baskets.

Crown Vetch

Often used to stabilize slopes, Crown Vetch spreads aggressively and develops an extensive root system. This vigorous growth smothers many common weeds, making it effective for hillsides and challenging terrains. However, it can be invasive, so check local guidelines before planting and consider native alternatives where appropriate.

Avoid Mulberry Weed

Unlike the above plants, Mulberry Weed is invasive and not recommended as a weed suppressant. Instead, opt for safer living mulches like white clover, creeping phlox, ajuga, sedum or native ground covers suited to your area to ensure you don’t introduce problematic species.

Tips for Enhancing Natural Weed Control

Combining weed-suppressing plants with other good gardening habits can greatly reduce weeds. Use organic mulch to cover soil, water deeply but less frequently to encourage strong roots, remove weeds before they set seed, plant densely to limit bare soil, and enrich your soil with compost each year.

By taking a multi-faceted approach, you’ll create a more resilient garden with less weeding, better plant health, and improved soil quality.

Creating Gardens That Work For You

For landscapers and garden centers, recommending these plants provides customers with natural tools to manage weeds while improving garden beauty and supporting beneficial insects. Thoughtful plant choices coupled with smart care practices help clients enjoy their outdoor spaces with less hassle and more satisfaction.