12 Fast-Growing Groundcovers to Smother Weeds Naturally

Tired of the endless cycle of pulling weeds only to see them return a week later? The secret to a low-maintenance garden isn’t a stronger chemical—it’s a “living mulch.”

Weeds are biological opportunists; they fill any empty, sunny gap in your soil. By planting fast-growing groundcovers, you physically “crowd out” the competition. These plants create a dense, beautiful carpet that blocks sunlight from reaching weed seeds, effectively stopping them before they start.

Whether you have a scorching sunny slope or a damp, shady corner, here are 12 powerful groundcovers to help you reclaim your garden.

The Sunny Survivors

These plants thrive in full sun and are tough enough to handle heat while spreading rapidly.

• 1. Creeping Thyme: A fragrant, edible favorite. It forms a tight, purple-flowered mat that can even handle light foot traffic. (Zones 2-8)
• 2. Creeping Phlox: Best for early spring color. It creates a literal “carpet” of flowers in pink, purple, or white that smothers everything beneath it. (Zones 4-8)
• 3. Stonecrop (Sedum): These succulents are nearly indestructible. They spread quickly in poor soil and rocky areas where weeds usually thrive. (Zones 3-10)
• 4. Brass Buttons: Known for its unique, fern-like foliage and yellow “button” flowers, this is a resilient, drought-tolerant choice for warmer spots. (Zones 5-10)

The Shade Specialists

Dark, damp areas under trees are weed magnets. These plants love the shadows.

• 5. Sweet Woodruff: A rapid spreader for moist shade. It has delicate white flowers and a sweet scent, making it perfect for woodland gardens. (Zones 4-8)
• 6. Hostas: Their massive leaves act like umbrellas, shading out the ground so effectively that nothing can grow beneath them. (Zones 2-7)
• 7. Bugleweed (Ajuga): It forms an incredibly dense, low-growing mat with striking blue flower spikes. It is one of the most effective “weed-blockers” available. (Zones 4-10)

The Rapid Spreading “All-Stars”

If you need coverage fast, these are your go-to options.

• 8. Creeping Jenny: With its vibrant lime-green, coin-shaped leaves, it fills in gaps near water or walkways in record time. (Zones 3-10)
• 9. Periwinkle (Vinca): A classic evergreen with glossy leaves and purple blooms. It’s particularly great for preventing erosion on steep slopes. (Zones 3-9)
• 10. Clovers: An eco-friendly lawn alternative. Clover fixes nitrogen in the soil, feeding your other plants while creating a dense green barrier. (Zones 2-10)
• 11. Dichondra: Similar to clover but with rounder, “fan-shaped” leaves. It creates a soft, velvet-like rug that stays very low to the ground. (Zones 8-11)
• 12. Creeping Juniper: A woody, evergreen option that provides year-round coverage and a unique texture. It’s perfect for large, open landscapes. (Zones 2-7)

How to “Win the Race” Against Weeds

To ensure your groundcover wins the battle, follow these three strategic steps:

1. Start Clean: You must remove all existing weeds before planting. Groundcovers are great at preventing weeds, but they aren’t great at killing established ones.
2. The “Pinch” Method: To make your plants spread even faster, pinch off the vertical growing tips. This forces the plant to send its energy sideways into new runners.
3. Mind the Spacing: Don’t plant them too close together. Give them room to “stretch” so they don’t compete with each other for nutrients.

A Quick Warning: Check Your Zone

Because these plants grow so fast, some (like Creeping Jenny or Periwinkle) can be considered invasive in specific regions. Always double-check your local environmental guidelines before planting to ensure your “living mulch” stays exactly where you want it.