The right boulder is the one that fits the scale of your space and looks like it has always been there. Match boulder size to the area, group them in odd numbers with a mix of sizes, and bury about a third of each stone so it reads as settled rather than dropped. Below is how to size, group, place, and order them.
Start with scale
A boulder that looks big in the yard at the supply yard can look small once it is sitting in an open lawn, and a boulder that looks right by the house can swallow a small bed. Walk the spot before you buy. As a rough guide:
- Small accent boulders (roughly 1 to 2 feet across) work in planting beds, along paths, and tucked beside steps.
- Medium boulders (about 2 to 3 feet) anchor a corner, frame an entry, or sit at the head of a dry creek bed.
- Large and specimen boulders (3 feet and up) become a focal point. One of these usually does more than several small ones scattered around.
If you are not sure, size up rather than down. A single larger boulder almost always reads better than a cluster of small ones trying to do the same job.
How many, and how to group them
Boulders look most natural in odd-numbered groups: one strong piece on its own, or a group of three or five. Vary the sizes within a group so it looks like nature placed them, not a crew with a tape measure. A common arrangement is one large boulder with one or two smaller ones nearby, set at slightly different angles.
Leave some space between stones. They do not need to touch, and a little breathing room makes each one read as deliberate. Turn the most weathered or interesting face toward the main view.
Placement basics
The single trick that makes boulders look settled is burying part of each one. Sink roughly a third of the stone below grade so it looks like it grew out of the ground instead of being dropped on top of it. This also keeps the boulder stable and stops soil from washing out around the base.
- Dig the seat a little deeper than you think, then backfill so the boulder sits firmly without rocking.
- Set the flattest or most attractive face toward where people will see it.
- Tuck low plants or a skirt of gravel around the base to soften the transition.
For more design ideas and pairings, see our guide to landscaping with boulders.
How boulders are priced and ordered
Earth Stone Rock sells most boulders by weight, not by the piece, so you can buy the amount that fits your project. On each boulder product page you can buy by the ton or by the pound, and a calculator helps you work from a size or a target weight. Buying by weight is the honest way to price natural stone, since no two boulders are exactly alike.
One-of-a-kind specimen boulders, the large statement pieces, are priced by quote rather than off the shelf. If you have your eye on a big focal stone, request a quote and we will work out pricing and delivery for that specific piece.
Think about access before you order
A boulder is heavy, and the hardest part of any boulder job is getting it from the truck to its final spot. Before you order, think about how it gets there. A small accent stone two people can roll into place is a different job from a half-ton boulder that needs equipment.
- Can the delivery truck reach the drop point, or will the stone land at the curb or driveway?
- Is there a gate, a tight side yard, or soft turf between the drop and the final spot?
- For larger stones, do you have a way to move them (a skid steer, a few strong helpers, or a contractor)?
Tell us where you are and what you are setting, and we will be realistic about what works. You can check your delivery zone and see an estimated delivery cost on our delivery map and ZIP checker before you commit.
Frequently asked questions
How do I choose the right boulder size?
Match the boulder to the scale of the area. Small accents of 1 to 2 feet suit beds and paths, medium 2 to 3 foot stones anchor corners and entries, and 3 foot and larger boulders work as a focal point. When in doubt, size up. One larger boulder usually reads better than several small ones.
How many boulders should I group together?
Odd numbers look most natural: one strong boulder on its own, or groups of three or five with varied sizes. Leave a little space between them and turn the most interesting face toward the main view.
How deep should a boulder be buried?
Bury about a third of each boulder below grade. This makes it look like it grew out of the ground, keeps it stable, and stops soil from washing out around the base.
How does Earth Stone Rock price boulders?
Most boulders are sold by weight. You can buy by the ton or by the pound, with a calculator on each product page to help you size the order. One-of-a-kind specimen boulders are priced by quote.
Can you deliver large boulders?
Yes. Delivery rates vary by distance and weight, and large or far orders may route to a freight quote. Think about truck access and how the stone will reach its final spot before ordering. Check your zone and an estimated cost on our delivery map, or request a quote for a specific boulder.
Get the materials
Browse our boulders to buy by the ton or by the pound, or request a quote for a specimen piece or a large order. Not sure a truck can reach the spot? Check your delivery zone and an estimated cost on our delivery map and ZIP checker first. We deliver locally and ship nationwide from our California yards.