Landscape Rock Calculator
Calculate Landscape Rock
Estimate decorative rock for landscaping projects
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Formula
Tons = Area (sq ft) x Depth (in) / 12 / 27 x Weight per cu yd / 2,000 x 1.10
Frequently Asked Questions
How deep should landscape rock be?
For decorative ground cover, 2-3 inches is standard. Use 3-4 inches for weed suppression. Lighter rocks like lava rock can be 2 inches, while heavier crushed stone should be at least 2-3 inches.
How much does landscape rock cost?
Prices vary widely: crushed granite $30-$50/ton, lava rock $50-$120/ton, marble chips $70-$150/ton, slate chips $80-$130/ton. Bulk delivery is much cheaper than buying bags.
Should I put fabric under landscape rock?
Yes, always install landscape fabric under decorative rock. It prevents weeds from growing up through the rock and keeps the rock from sinking into the soil over time.
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