Measure the open bed surface and check existing mulch before adding more.
Measure the project
Calculate only the new layer depth; keep plant crowns and trunks clear.
Estimate the main materialMaterial checklist
- Mulch
- Optional edging
- Weed removal supplies
Check quantities, specifications, and delivery with your supplier. This list is a planning prompt, not a construction design.
Quantities to price
- Mulch volume: exposed bed area × incremental new depth ÷ 324.
- Bags: cubic yards × 27 ÷ bag cubic feet, rounded up.
- Edging: price only the borders you intend to install.
Where the plan can change: Existing mulch counts toward final depth; keep a mulch-free space around stems and trunks.
Work sequence
- Remove weeds
- Measure exposed soil
- Spread mulch evenly
- Pull material back from stems
Further guidance
University of Minnesota Extension: Mulching for soil and garden health. Follow local requirements and product instructions for the actual installation.