Converting a Steep Hillside from Grass to Groundcovers: No Chemicals Needed

A homeowner wanted to kill grass on a steep slope bordering a neighbor's yard, then plant juniper (lower half) and flowering plants (upper half) without harming adjacent lawns. The solution: smother, don't spray.

Why Not Glyphosate?

Spray drift damages nearby plants. It also kills beneficial soil life. On a slope, runoff risk is high.

Smothering with Black Plastic (Hefty Bags)

1. Mow grass/weeds as low as possible.
2. Cover with heavy-duty black trash bags, weighted with stones.
3. Leave 4–6 weeks (longer in cool weather).
4. Remove bags, till lightly, water to germinate remaining seeds.
5. Cover again for another cycle.

Soil Enrichment Before Planting

Incorporate compost or humus to improve water retention and nutrition. Juniper and flowering perennials will establish faster in living soil. Groundcovers eliminate dangerous mowing on slopes and provide year-round erosion control.

Solarization (clear plastic) works better in hot climates, but a cool summer made smothering the safer bet. The design is sound—proceed with confidence.