Mulch vs. Stone for Landscape Beds

It’s the question we hear most at the yard: “Should I do mulch or stone?” Both cover bare soil, both cut down on weeds, and both make beds look finished. But they behave very differently over time — and the right answer depends on what’s planted there, how long you’ll be in the home, and how much yearly upkeep you want.

Cost: mulch is cheaper today, stone is cheaper in year five

Bulk hardwood mulch costs less per cubic yard than decorative stone, spreads faster, and is light enough to move with a wheelbarrow and a rake. The trade-off is that mulch decomposes — that’s part of its job — so beds need a 1–2 inch top-off every year or two.

Stone flips that math. It costs more up front and is heavier to install (figure roughly 2,500–2,800 lbs per cubic yard versus about 800 lbs for mulch), but it doesn’t break down. A stone bed done right can go many years with nothing more than blowing the leaves out of it.

Plant health: mulch feeds the bed, stone just sits there

As hardwood mulch breaks down it adds organic matter to the soil underneath — a real benefit in the heavy clay soil most of the northwest suburbs sit on. It also insulates roots against our freeze-thaw swings and holds moisture through July and August.

Stone does none of that. It also absorbs heat: a rock bed against a south-facing wall gets hot in summer, which stresses shallow-rooted shrubs and perennials. That’s why we steer planting beds toward mulch and save stone for areas where little or nothing is growing.

Weeds: neither one is weed-proof

A thick mulch layer (3–4 inches in a new bed) smothers most weed seeds, but as the mulch ages, seeds blown in on top will sprout in it. Stone over a quality landscape fabric starts out nearly weed-free, but dust and debris settle between the rocks over the years and weeds eventually root in that — and they’re harder to pull out of rock than out of mulch. Either way, expect some weeding; the difference is how much and how easy.

Where each one wins

• Mulch is the better call for: planting beds, around trees and shrubs, vegetable gardens, play areas (we carry certified playground mulch), and anywhere you want the soil to improve year over year.
• Stone is the better call for: foundation strips and drip lines, drainage paths and downspout runs, windy exposed spots where mulch blows around, fire-pit surrounds, and low-maintenance commercial frontage.

What we carry

On the mulch side: premium hardwood, dyed (black, brown, red), cedar, eco, play mulch, and arbor chips — all by the cubic yard. On the stone side: pea gravel, washed stone, limestone, rip rap, and decorative stone, plus natural stone for edging and borders. Delivery is the same flat rate by distance no matter which you choose.

Figure out how much you need

Both materials use the same math: length × width × depth. One cubic yard covers about 100 sq ft at 3 inches deep. Our coverage calculator totals multiple beds for you and rounds to the half-yard the way we load the truck.