Permanently Eliminating Grass Under Decks with Landscape Fabric and Mulch

Introduction

Grass under deck needs permanent suppression. Shade alone may not kill it if boards allow light.

Solution

• Lay **black landscape fabric** over soil.
• Cover with **3 inches cedar bark mulch**.
• Fabric blocks light; cedar deters termites, ants, fleas.

Why It Works

No light = no photosynthesis. Cedar mulch adds long-term pest barrier. Author's deck: grass died in shade, then cedar mulch prevented any regrowth and insects.

Conclusion

Fabric + cedar mulch = permanent, attractive, pest-resistant under-deck ground cover.