How to Measure Your Mulch Beds
Measure each bed separately and add the results together. For rectangular beds, measure length and width in feet. For curved or irregular beds, estimate the closest rectangle that fits the shape. Most home landscape beds are overestimated by 10 to 15%, which is fine because leftover mulch stores well.
How Deep Should Mulch Be?
Three inches is standard for most landscape beds. This depth suppresses weeds, retains moisture, and insulates soil temperature. Two inches works when refreshing beds that already have a mulch base. Four inches is appropriate for areas with heavy weed pressure. Six inches is only recommended for playground surfaces where fall protection matters.
Avoid piling mulch deeper than 4 inches around plants. Excess depth traps moisture against stems and crowns, encouraging rot and fungal disease. Keep mulch 3 to 4 inches away from tree trunks and plant stems (no volcano mulching).
Cubic Yards vs Bags
Bulk mulch is sold by the cubic yard. One cubic yard covers roughly 108 square feet at 3 inches deep. Bagged mulch is sold in 2 cubic foot bags. You need about 13.5 bags to equal one cubic yard.
For areas under 200 square feet, bags are usually more practical. For anything larger, bulk delivery is cheaper and faster. Most landscape suppliers deliver bulk mulch for a flat fee within their service area.
Mulch Type Comparison
| Mulch Type | Cost per Cubic Yard | Lifespan | Best For |
|---|---|---|---|
| Hardwood bark | $30 to $45 | 1 to 2 years | General landscape beds |
| Cedar | $35 to $50 | 2 to 3 years | Insect-prone areas, natural look |
| Cypress | $35 to $55 | 2 to 3 years | Moisture retention, erosion control |
| Dyed (black, red, brown) | $30 to $40 | 1 to 2 years | Color consistency, budget |
| Rubber | $80 to $120 | 10+ years | Playgrounds, permanent beds |
| Pine bark nuggets | $30 to $45 | 2 to 3 years | Slopes (nuggets resist washing) |
