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Soil Blends
Our soil blends are designed to support a wide range of projects, including raised beds, organic gardens, rain gardens, turf installations, and specialty landscape or specification-driven applications across St. Louis and beyond. We blend high-quality topsoil, compost, sand, pine bark fines, and other proven ingredients to create soils with the right balance of drainage, porosity, and nutrient availability. Custom blends are available upon request and can include additions like biochar, organic fertilizers, or other amendments to meet specific growing, environmental, or project requirements—ensuring enriched, performance-driven soil for whatever you’re building or planting.
Our delivery fees vary by zip code starting at $85 per delivery. For precise pricing, please call our office at 636-861-3344
Premium, shredded oak bark for mulching around trees and in the garden.
$26 / cubic yard
St. Louis Composting
Raised Bed Mix
SLC Raised Bed Mix is a blend of topsoil, sand, pine bark fine and Black Gold Compost that is specifically designed for use in raised planting beds or planting box gardens. This blend features a lower soil pH and allows better porosity and airspace in the soil for superior root zone conditions. SLC Raised Bed Mix features an organic starter charge.
$46 / cubic yard
Available for pick-up at Valley Park, Florissant, and Belleville, IL locations.
Rain Garden Mix
A custom blend of soil and compost material ideal for cultivating bio-retention areas (or rain gardens) where rainwater and runoff collect for slow filtering into soil.
$42 / cubic yard
Available for pick-up at Valley Park, Florissant, and Belleville, IL locations.
Premium, shredded oak bark for mulching around trees and in the garden.
$26 / cubic yard
Topsoil Plus
A 70/30 mix of screened river-bottom topsoil and Black Gold compost makes a great base for sod and helps restore depleted garden beds.
$38 / cubic yard
Available for pick-up at all locations, except Troy.
Garden Mix
A 50/50 blend of river-bottom topsoil and Black Gold compost is perfect for enhancing soil in raised garden beds and planting areas with clay or rock bases.
$42 / cubic yard
Available for pick-up at Valley Park, Florissant, and Belleville, IL locations.
Topsoil: OUT OF STOCK
River-bottom topsoil, screened and pulverized, is ideal for lawns and gardens.
$40 / cubic yard
Available for pick-up at Valley Park, Florissant, and Belleville, IL locations.
Engineered Soil Mixes
St. Louis Composting also creates custom soil blends to order. The following are examples of our best-selling custom mixes, but we can craft any specialty soil you might require. Feel free to inquire with us for complete information and a free quote. Due to the nature of custom blends, advanced ordering is required.
Peat Free Mix
St. Louis Composting’s Peat Free Mix is our most sustainable grower mix made with STA-Certified Black Gold Compost and processed pine bark fines. No Canadian sphagnum included. This mix is well suited for smaller containers through 3 gallon. Uses include mums, perennials and annuals. Included are pH buffers and a compensatory nitrogen charge.
In Missouri, call
Roy Gross at
In Illinois, call
Tom Tharp at
Premium, shredded oak bark for mulching around trees and in the garden.
$26 / cubic yard
Tree & Shrub Mix
Tree & Shrub Mix is a blend of processed pine bark fines, and STA-Certified Black Gold Compost. It is optimized for the container production of tree and shrub liners. Included are pH buffers and a micronutrients package.
In Missouri, call
Roy Gross at
In Illinois, call
Tom Tharp at
Perennial Mix
Perennial Mix is a blend of processed pine bark fines, compost and sphagnum peat. Perennials Mix is intended for production of perennials and natives. This mix is suitable for plugs and liners. The mix is well suited for small containers up to 3 gallon. Included are pH buffers, wetting agent and a micronutrients package.
In Missouri, call
Roy Gross at
In Illinois, call
Tom Tharp at
Commercial & Engineered Soil Blends for Landscape and Construction Projects
We provide engineered soil blends for commercial, municipal, and large-scale landscape projects that require consistent performance and specification compliance. Our soils are used for developments, parks, green infrastructure, and construction-related applications where drainage, compaction resistance, and long-term soil health matter. We work with contractors, landscape architects, and engineers to supply custom-blended soils—including bioretention, rain garden, and turf soils—with optional amendments such as biochar or organic fertilizers to meet project specs, sustainability goals, and site-specific performance requirements.
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