The honest trade-offs, including the ones specific to a climate with real winters.
| Mulch | River rock | |
|---|---|---|
| Soil health | Feeds soil as it decomposes | Neutral; adds nothing |
| Upfront cost | Lower | Higher |
| Lifespan | Refresh every 1 to 2 years | Many years |
| Iowa winters | Scatters when snow is shoveled onto it | Unbothered |
| Around plantings | Excellent; holds moisture | Radiates summer heat onto plants |
| Weed control | Good at 2 to 3 inches | Good over fabric, until debris builds up |
Mulch wins in planted beds. Perennials, shrubs, and annual beds want the moisture retention and the slow feeding of decomposing hardwood. It looks warm, smells like spring, and is kind to whatever grows in it.
Rock wins where work should end. House perimeters, downspout and drip-line runs, mailbox and utility strips, and beds beside driveways where snow gets thrown all winter. It does not wash out in a gully-washer thunderstorm, does not blow into the lawn, and never asks for an annual refresh.
Rock on the foundation line and working strips, mulch in the planted beds. It reads intentional, ages well, and each material does the job it is actually good at. Our mulching and river rock service installs both, measured and quoted honestly.
Done reading, want it done? See our Mulching / River Rock service.
Yes, rock absorbs and radiates heat, which stresses plantings in full-sun beds during an Iowa July. That is exactly why rock is best on foundation and utility strips and mulch is best where things grow.
Yes, a quality woven fabric keeps rock from swallowing into the soil and slows weeds. Expect some windblown debris to accumulate over the years anyway; an occasional blow-out keeps it clean.
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