RLC Lawn & Landscape · Free planning tool · Lutz & Tampa Bay
Rock vs. Mulch Cost Calculator
Mulch is cheaper to install. Rock is cheaper to keep. Enter your bed size and prices to see the total cost of each over 5, 10 or 15 years, and the year rock pays for itself.
Your bed and prices
Prices are example Tampa Bay figures, not a quote. Replace them with the numbers from your estimate for a true comparison.
Total cost over time
Year-by-year table
| Year | Mulch total | Rock total |
|---|
How the comparison works
The calculator adds up everything you would spend on each material over time. Mulch starts with the installation cost, then adds a refresh on the schedule you choose. Rock starts with a higher installation cost, then adds a small yearly upkeep amount for cleanup and weed control, plus a top-up every five years. Both sides increase each year by the price-increase rate you set.
Mulch total = install + (refreshes × refresh price, rising each year) Rock total = install + yearly upkeep + a top-up every 5 yearsWhat the numbers do not show
- Heat: rock absorbs and radiates heat, which can stress plants in full sun and increase watering.
- Trimming and leaves: clippings and oak leaves fall between stones and must be picked or blown out.
- Soil health: mulch adds organic matter as it breaks down; rock does not.
- Flexibility: changing plants in a rock bed means pulling stone and cutting fabric.
Read the full mulch vs. rock guide for heat, upkeep and where each material works best.
Want real numbers for your beds?
RLC can price mulch and rock side by side for each area of your yard so you can compare with confidence.
Frequently asked questions
When does rock become cheaper than mulch?
It depends on your prices and how often you refresh mulch. With typical Tampa Bay pricing and a yearly mulch refresh, rock often breaks even somewhere between year 4 and year 7.
What should the rock price include?
Excavation or leveling, weed barrier fabric, the stone at your chosen depth and disposal of old material. Edging is sometimes listed separately.
How often should mulch be refreshed in Florida?
Most beds need a 1–2 inch top-up about once a year. Beds in full sun, heavy rain paths or high-visibility areas may be refreshed every 6 months.
Is rock always the better investment?
No. Rock costs less over time in many cases, but it holds heat, makes trimming and leaf cleanup harder and does nothing for soil. Mulch is often the better choice for planted beds and areas under trees.