The decision matrix: bed type to mulch to depth
Match every bed on the property to the row that fits its function. The depth column reflects what Colorado State Extension and Penn State Extension both publish — there is no universal "3 inches everywhere" rule, and ANSI A300 for tree care explicitly caps tree-ring depth lower than ornamental beds.
| Bed type | Best mulch | Depth | Refresh interval |
|---|---|---|---|
| Foundation / front-yard ornamental | Double-shredded dyed hardwood | 3 in | Full refresh every 1–2 yr |
| Tree ring (per ANSI A300) | Coarse arborist chips, tapered at trunk | 3–4 in (1 in at bark) | Top-dress 1 in annually |
| Perennial / cottage border | Shredded hardwood, undyed | 2–3 in | Top-dress 1 in spring + fall |
| Shrub island bed | Pine bark nuggets or aged hardwood | 3 in | Full refresh every 2 yr |
| Side-yard utility bed | Free arborist chips (ChipDrop) | 4 in | Top-dress every 2–3 yr |
| Slope (> 15% grade) | Shredded hardwood, locks together | 3 in | Top-dress annually; re-edge |
| Vegetable garden | Straw or aged compost | 1–2 in | Replace each season |
How to measure a whole property without buying a wheel
You do not need a measuring wheel for a residential audit. Pacing in 3-foot strides and rounding each bed to a rectangle (or splitting an irregular one into two rectangles) gets within 8% of true area — better than the precision of any mulch supplier's delivery scoop.
- Walk the property in a clockwise loop with a phone notes app
- Pace each bed: count strides for length and width, multiply by 3 ft
- Round irregular beds: split into 2–3 rectangles, sum the areas
- For tree rings: measure the diameter at the widest crown, calculate π × (d/2)²
- Total each bed type separately (foundation, tree ring, border, slope, utility)
- Multiply each total by its target depth in feet (3 in = 0.25, 4 in = 0.33)
- Sum all volumes, divide by 27 for cubic yards, add 10% settling buffer
Worked example: a 1/4 acre lot with mixed beds
Total spend (2026 US bulk pricing): 9 cu yd hardwood at $45/yd delivered = $405. ChipDrop tip $20. One straw bale $8. Grand total: $433 for a complete property mulch refresh. Big-box bagged equivalent at $5.50/2 cu ft bag would run $115 plus ~$0 transport, but you would need 115 bags and 4 truckloads — at most homeowners' time value, the bulk-plus-ChipDrop split saves $200–$400 in labor as well as the material cost.
Bulk delivery vs bagged vs ChipDrop: when each wins
| Source | Best for | Cost (2026 US) | Trade-off |
|---|---|---|---|
| Bulk delivery (cu yd) | Any property > 3 cu yd needed | $35–$70/cu yd delivered | Need driveway access; pile sits for ~3 days max |
| Bagged at big-box store | Beds < 1 cu yd; need exact color match | $3.50–$5.50 per 2 cu ft bag | 13.5 bags = 1 cu yd; equivalent of $50–$74/cu yd |
| Arborist chips (ChipDrop) | Tree rings, utility beds, pathways, slopes | Free + optional $20–$40 tip | Random species mix; truck-size load (~10 cu yd) |
| Mushroom or hardwood compost | Vegetable beds, soil rebuilds | $25–$40/cu yd | Not suitable as decorative top mulch |
Coordinate timing across the property: order bulk hardwood for the front foundation in late April, accept a ChipDrop in mid-May for the back zones, and pick up your straw bale at the farm co-op when nighttime lows stay above 50°F. Splitting the work across 2–3 weekends keeps the install pace at 1.5 cu yd per hour without back strain.