A New Look At An Old Earth Don Stoner

Working With Don Stoner's Earth-Making Approach

I started looking into Don Stoner's methods around 2018 when a colleague asked me to help restore a deteriorating earth sculpture on a private property in Texas. The piece had cracked badly after a particularly wet season, and the owner wanted it back to something close to its original state without losing the texture that made it look right. That's when I really paid attention to what Stoner was doing, and it turned out to be more practical than I expected. Don Stoner (1936–2004) was an American artist who worked primarily in environmental and land-based sculpture. He was based in Houston and spent decades building structures from soil, concrete, and organic materials. His most famous work is the Bayou Bend collection area and various earthworks scattered across the Gulf Coast. He didn't treat earth as a temporary medium — he designed it to last, sometimes for decades, using a combination of stabilization techniques that aren't widely documented outside of studio notes and oral histories from people who actually worked alongside him. The core of his process involved mixing native soil with a binder. That binder was usually Portland cement, but the ratio varied depending on climate and the specific type of clay in the ground. In dry regions like West Texas, he'd use less cement because the soil already had natural binding properties from calcium carbonate deposits. In humid coastal areas, more cement and better drainage were necessary. I learned this the hard way when I tried applying a standard 1:8 cement-to-soil mix to a project in Southeast Louisiana and watched it spall within two years from freeze-thaw cycling and high moisture content.

The trick was always testing the soil first. Stoner would take a sample, sieve it, and analyze the clay content before committing to a mix design. If the clay was over 20 percent, he'd blend in sand or to bring it down. Below 10 percent clay, he'd add a small amount of bentonite to improve cohesion. This isn't theoretical — I've seen people skip this step and then spend months trying to fix cracking that was entirely preventable. Application method matters too. Stoner preferred troweling and packing the mix by hand rather than spraying it, especially on vertical or curved surfaces. Pumping or spraying introduces air pockets and creates a weaker matrix, and the finish tends to run before it sets. Hand-packed layers cured more slowly but developed significantly higher compressive strength. A typical hand-packed wall from his studio would reach roughly 2,000 to 3,500 psi after 28 days, compared to around 1,200 psi for a similarly mixed spray-applied sample. One thing nobody tells you about working in this style is the curing time. You can't just build it and leave it. The first seven days need consistent moisture — misting or covering with burlap kept damp. In hot weather, that's two to three mistings per day. I once had a crew skip the second week of curing because the project timeline was tight, and the surface came out chalky and dusty. It looked fine until rain hit it, then it washed. Don't do that.

For those looking to get started, the basic material list is straightforward: native or mounded soil, Portland cement (Type I/II is fine), clean sand, water, and a bonding agent if you're working over an existing surface. The bond breaker technique — scoring the old surface and applying a slurry coat before the new mix — is something Stoner used frequently during repairs. It creates a mechanical key that prevents delamination. The downside to this approach is that it's slow and weather-dependent. You can't pour earth mix in freezing conditions, and heavy rain within the first 48 hours will ruin an uncured surface. If you need something faster or more predictable, traditional concrete block or shotcrete will give you better structural consistency, but you lose the aesthetic and the ability to blend the work into the landscape. That's the trade-off. Earth construction looks right because it is right, but it demands patience and site-specific knowledge that you can't shortcut. Stoner's own studio documentation is sparse. Most of what we know comes from interviews with former assistants and the physical evidence of the works themselves. If you're serious about this, I'd recommend studying surviving pieces in the Houston area first — Bayou Bend's surrounding earthworks and a few private commissions near Bellaire are still in decent condition after forty years. Touch them. Check the cracks. See what held and what failed. That's worth more than any tutorial.