How to stop soil erosion on a steep backyard slope
By My Yard Editorial Team · 7/28/2026
The Quick Answer
Combine erosion control blanket plus deep-rooted plantings; for slopes steeper than 3:1, add terracing or a low wall. Blankets cost $0.30–$0.80/sq ft and hold seed long enough to root.
The Witty Breakdown
Grass alone on a steep slope is a losing battle — mowing it is dangerous and shallow roots don't hold soil in a downpour.
Woody groundcovers and native grasses with 3-foot root systems are what actually stop erosion.
Step-by-Step Fix
- 1
Divert water above the slope first with a swale or berm — stop the source.
- 2
Install jute or coir erosion blanket, staked every 3 feet.
- 3
Plant deep-rooted natives through the blanket: switchgrass, sumac, juniper, or creeping phlox.
- 4
Mulch with shredded hardwood, which knits together, not with nuggets that float.
Pro-Tip / Do Not Do This
Don't put down landscape fabric and river rock on a steep slope. It becomes a slow-motion rock slide with weeds in it.
Was this helpful?
Related Guides
Community Comments
No comments yet — be the first neighbor to weigh in.