Pea Gravel Depth Guide

UseRecommended DepthNotes
Decorative border1–2 inchesMainly for looks, minimal function
Garden path2–3 inchesUse landscape fabric underneath
Pet area / dog run3–4 inchesEasier on paws than crushed stone
Driveway (not recommended)4+ inchesPea gravel shifts; use crushed stone for driveways
Playground safety surface9–12 inchesCPSC standard for equipment up to 8 ft high

What is Pea Gravel?

Pea gravel is small, rounded gravel typically 3/8 inch in diameter. Its smooth, rounded edges make it comfortable underfoot and safe for playgrounds. Unlike crushed stone, it does not compact — which is great for drainage but means it shifts under foot traffic and vehicles. It comes in natural tan/grey or colored varieties.

Pea Gravel vs. Crushed Stone

FeaturePea GravelCrushed Stone
ShapeRound, smoothAngular, jagged
CompactionDoes not compactCompacts well
DrainageExcellentGood
Best usePaths, playgrounds, decorDriveways, bases, patios
Cost$25–55/ton$20–45/ton