Eliminating Grass in a Creeping Juniper Border

Grass (likely wiregrass or Bermuda) invading a creeping juniper bed despite weed barrier is a common headache. The grass roots penetrate barriers and intertwine with juniper roots, making removal tricky.

Effective Strategy

1. Remove Existing Grass Thoroughly: Hand-pull or carefully dig out all grass rhizomes. This is labor-intensive but essential. Work in sections to minimize juniper root disturbance.
2. Install a Better Barrier: Use a heavy-duty woven landscape fabric (not plastic) pinned securely. Overlap seams by 12 inches.
3. Add a Vertical Edge: Bury a 6-8 inch deep plastic or metal edging along the bed perimeter to block lateral grass runners.
4. Mulch Deeply: Apply 3 inches of shredded bark or wood chips over the fabric. This suppresses new weeds and conserves moisture.
5. Spot-Treat Breakthroughs: Use a grass-selective herbicide (sethoxydim or fluazifop) on any grass that emerges—it won't harm broadleaf junipers. Shield juniper foliage during application.

Long-Term Maintenance

Inspect monthly and remove invaders promptly. A dense, healthy juniper mat will eventually shade out most weeds. Fertilize junipers lightly in spring to encourage thick growth.