6-2 With mulch and no water, weeds don’t grow Published May 4, 2011 at 450 × 600 in Gardening Made Easy – For Moderate to Arid Climates ← Previous / Next → Use Grass Mulch for Weed Control Pretty simple principle: Keep out the sunshine and water, weeds won’t grow on “high” pathways, or on bare ground between plants in “low” growing surfaces.