Eliminating Grass/Weeds in Mixed Area for Rock Landscaping

Area with cement, gravel, grass/weeds. Want permanent kill to install rock. Also have ants and suspected aphids.

Vegetation Control

• Glyphosate (Roundup): Kills all existing plants. No soil residual. Apply to actively growing weeds. Wait 7–10 days.
• Pre-emergent after: Prodiamine or pendimethalin to prevent new weeds in rock.
• Landscape fabric: Under rock for extra suppression (but not permanent).

Ant/Aphid Connection

Ants farm aphids for honeydew. Kill aphids → ants leave. Glyphosate kills weeds hosting aphids. If aphids on ornamentals: insecticidal soap, neem oil, or systemic (imidacloprid) per label.

Process

1. Spray glyphosate on all vegetation.
2. Wait for complete kill.
3. Remove dead material if thick.
4. Install landscape fabric (optional).
5. Apply pre-emergent.
6. Spread rock.