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SAVE $40 on Additional Bags - Use Code SAVE40
SAVE $40 on Additional Bags - Use Code SAVE40
12MM Washed Round Gravel 1 Yard Bag

12MM Round Washed Rock

by LandscapeSupplyGuys.com
$224.00 - $234.00
$234.00
$224.00 - $234.00
$234.00

12mm round washed rock also know as pea gravel is the smallest of our three washed stone sizes. The smooth, rounded shape and clean finish make it a natural fit for decorative landscaping such as garden beds, borders, pathways, and ground cover where a neat, uniform look matters.

Each bag is pre-measured so you know what you're getting: a 1/2 yard bag - small covers approximately 54 sq ft at a 3-inch depth. A 1 yard bag covers approximately 108 sq ft at the same depth. Need other sizes? Explore our complete of washed rock.

We offer free delivery of pea gravel in Calgary.

What is 12MM Round Washed Rock Used For?

12mm pea gravel works well anywhere you want a fine, clean finish:

  • Garden beds and planting borders

  • Walkways and foot traffic pathways

  • Ground cover under decks and pergolas

  • Drainage layer beneath paving stones

  • Between stepping stones

  • Pet-friendly yard surfaces

  • Shallow French drain fill

Because pea gravel is small and uniform, it packs together more closely than larger sizes, which makes it a good choice for detail work.

Coverage and Bag Sizes of Pea Gravel

Bag size Coverage at 2" depth Coverage at 3" depth
½ yard ~81 sq ft ~54 sq ft
1 yard ~162 sq ft ~108 sq ft

Product Details

  • Size: 12mm (approx. 1/2")

  • Type: Round washed rock / pea gravel

  • Delivery: Free delivery across Calgary

Why buy from LandscapeSupplyGuys.com

We deliver 12mm round washed rock bags to Calgary, Airdrie, and Chestermere. Whether you're finishing a backyard landscaping project in Airdrie, replacing mulch in Chestermere, or laying a clean pathway in Calgary — order the bag size you need and we'll bring it to you. Free delivery, no minimum order.

Order 12MM Round Washed Rock in Bags Today

Choose your bag size and place your order online. Free delivery anywhere in Calgary. If you have questions, call (403) 300-3478 and a landscape specialist will help you choose the right size.

**Please keep in mind that the size of the material can and will vary dramatically from the nominal size listed above. The unit size listed above is the nominal industry standard size and does not represent the exact size of every individual piece of product. Not all individual pieces of material will be of the same size. Please insure you are ordering the correct product once materials are delivered they cannot be picked back up**

Frequently Asked Questions

Q. What is 12mm washed rock?

A: 12mm washed rock is a small, smooth, rounded stone roughly the size of a pea. It is washed to remove dirt and fines, leaving a clean surface. It is commonly used in landscaping, garden beds, pathways, and drainage applications.

Q. Is 12mm rock good for drainage?

A: Yes. 12mm washed rock drains well because the rounded stones leave consistent gaps for water to pass through. It works as a drainage layer under paving stones or as a shallow French drain fill.

Q. How much does a 1/2 yard bag of 12mm rock cover?

A: A 1/2 yard bag of 12mm rock covers approximately 54 sq. ft. at a 3-inch depth.

Q. What is the difference between 12mm and 20mm washed rock?

A: 12mm washed rock is smaller and packs together more closely, making it better for decorative and detail work. 20mm is more versatile and works for both landscaping and heavier drainage jobs.

Q. What is the difference between 12mm washed rock and the other sizes you carry?

A: 12mm is the smallest of our three washed rock sizes. It packs together more closely than 20mm or 40mm, which makes it the best choice for decorative work — garden beds, pathways, and tight spaces where a fine, neat finish matters. If you need a general-purpose drainage rock, 20mm is more versatile. For driveways and deep drainage trenches, 40mm is the right size.

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