Which is cheaper, pea gravel, river rock, or crushed stone?

Generally, crushed stone is the most affordable because it is manufactured in mass quantities at local quarries. Pea gravel falls into the mid-price range, while river rock is typically the most expensive. The higher cost of river rock is due to the logistics of harvesting, sorting, and transporting large decorative stones from natural waterways.

Can I use pea gravel for a residential driveway?

It is highly discouraged unless you install a rigid, honeycomb-style stabilizing grid underneath it. Because pea gravel is perfectly round, it will never compact. Car tires will sink into it, creating deep ruts and scattering the stones. Always use a dense-graded crushed stone like crusher run for driveways.

How do I stop weeds from growing through gravel or river rock?

The most effective method is to excavate the topsoil and lay down a heavy-duty, commercial-grade geotextile landscape fabric before pouring your stones. Ensure the fabric overlaps by at least 6 inches at the seams.

How deep should I lay pea gravel for a walkway or patio?

For areas with foot traffic, you should lay pea gravel exactly 2 to 3 inches deep. If you lay it shallower than 2 inches, normal walking will quickly expose the landscape fabric underneath. If you lay it deeper than 3 inches, the stones will shift too much, making it feel like you are walking through deep sand.

Will crushed stone wash away in heavy rain?

If properly installed and compacted, crushed stone is highly resistant to washing away. Because the jagged edges lock together, it forms a heavy, stable mass. However, if you are dealing with a steep slope or a drainage ditch, large 2-inch to 3-inch river rock is the better choice for breaking up heavy water velocity.

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Pea Gravel vs. River Rock vs. Crushed Stone

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Mechanics: This is the defining feature of crushed stone—compaction. When tamped or rolled, the sharp, angular edges lock together like puzzle pieces, creating an incredibly stable, rigid, and load-bearing surface.

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