Managing a Large 45-Degree Slope: Mowing Tools, Weed Control Near Well, and Rock Mulch Alternative

A large steep slope (45°) with weeds near septic/well: push trimmer for mowing, careful herbicide use near well, rock mulch as long-term solution.

Mowing Safely

• Push string trimmer (brush cutter) — safer than walk-behind on steep slopes.
• Work top to bottom.
• Rental "brush trimmer" (large wheels, high blade) also effective.

Herbicide Near Well

• Keep 50+ ft from wellhead.
• Use non-residual, non-selective (glyphosate) only.
• Spot-treat, don't broadcast.
• Check Janisan.com weed chart for targeted options.

Long-Term: Rock Mulch Conversion

• 4-12" river rock/cobble, 2-3" depth over fabric.
• Spot-plant drought-tolerant evergreens (junipers, pines).
• Cost: ~$50/yd³, covers 80 sq ft. 400 sq ft = 5 yd³ = $250.
• Compare to trimmer cost + annual labor.

Photo Offer

Email to marc@desertLA.com for site-specific advice.

Rock mulch eliminates mowing, reduces weeds, conserves water—ideal for large steep slopes.