Get matched with top mulch and topsoil pros in Bancroft, IA

Yes, and in many cases, you should. Large gravel works best as a base layer because it improves drainage and keeps the surface stable. A top layer of smaller gravel fills in gaps and creates a smoother, more compacted surface. This combination is common in driveways and high-traffic areas where both stability and comfort matter.

If you hire a professional landscaper, you could expect to pay between $90 and $660 to install three cubic yards of river rock. (That’s based on the average river rock installation cost of $30 to $220 per cubic yard.) However, the exact price depends on the kind of river rock you choose. Crushed limestone and riprap are some of the more affordable options, while boulders and Arizona river rock are pricier.

The best time to lay mulch depends on the type of mulch and the reason for installing it: 

• Summer: Adding extra mulch helps soil retain moisture and keeps weeds at bay, allowing plants to thrive. 

• Fall: Adding mulch helps control weeds and keeps soil and roots warm during the cooler months. Aim to add a layer of mulch 2 to 4 inches deep.

• Winter: Mulch around perennial plants to help keep them insulated.

• Spring: Wait until the ground has thawed. Depending on the thickness, add between 1 and 4 inches of mulch to provide freeze and rain protection and enrich the soil.

The most important thing to put under a rock garden is the appropriate soil. The specific soil needed will depend on the type of plants you’re growing as well as the environment you live in. You can also put non-woven or woven fabric under the rocks to add to the garden's structural stability.