Why edging matters
Edging keeps mulch off lawn and pavement, maintains depth over time, and reduces washout on slopes. Without a border, rake-out into grass is inevitable — wasting material and killing turf.
- Trench edge: economical, natural look
- Plastic/composite bender board: curves, DIY-friendly
- Steel or aluminum: durable, modern lines
- Stone/brick: formal, higher labor
Weed control choices
Hand-pulling plus 3 inches mulch handles most residential beds. Landscape fabric under mulch can help on persistent weeds but impedes organic matter incorporation — cut Xs for new plantings.
Cardboard sheet mulch is a biodegradable middle ground for smothering grass when converting lawn to bed (plan extra volume for depressions as cardboard breaks down).
Prep checklist
1) Mark bed outline. 2) Install edging. 3) Remove weeds/debris. 4) Water plants. 5) Calculate volume with target depth. 6) Spread and depth-check.
Good prep means the mulch you calculated actually stays in the bed — not on the driveway.