Grow Beautiful. Grow Healthy. Grow with Mayer.
Healthier lawns and plants start with better biology.
Healthy growth begins in the soil. All of our products include our cold brew coffee compost to create living soils for nurseries, turf managers, and growers. The results are consistent: an array of beneficial microbes, acidic pH, and a deep range of trace minerals.
Our Brands
Living soils that grow.
Mayer
Composts, topsoils, specialty soils, and turf topdressings for the nurseries, sports-turf managers, and landscape pros across Texas.
Explore the Mayer line
GeoJava
Real coffee compost soils and fertilizers for home gardeners and houseplant hobbyists who want a premium, nutrient-rich input.
Explore the GeoJava line
Comanche Compost
Potting blends, soil amendments, and compost teas for professional and home growers who want a living, nutrient-rich soil.
Explore the Comanche lineSourced with care
The premium ingredients we grow with.
The foundation
Cold Brew Coffee Compost
Our signature input, composted from real cured coffee grounds. It is the foundation of every blend we make, the source of the beneficial microbes, acidic pH, and trace minerals our growers count on.
Estonian Peat Moss
Chunky 5 to 10mm peat that holds structure and water.
Canadian Peat Moss
Adds water-holding capacity and a stable, even base.
Buffered Coco
Buffered coir holds moisture without compacting the mix.
Coco Chips
Chunky coconut husk chips that open up the blend for airflow.
Vermiculite
A natural mineral that holds water and nutrients in the mix.
Horticulture Perlite
Coarse horticulture-grade perlite that adds lasting air to the mix.
Expanded Shale
Fired clay aggregate that keeps heavier soils loose and draining.
Red Lava Sand
Volcanic mineral grit that adds trace minerals and drainage.
Who we grow for
Built for the way you grow.
Sports Turf
Compost topdressing adds organic matter back into golf greens, sports fields, and hard-worn lawns for fast recovery.
Landscape
Structural and rooftop soils for landscape architects and contractors, built to spec for in-ground beds and containers.
Nurseries & Garden Centers
Potting and growing mixes with consistent microbiology that nurseries grow with and sell to their own customers.
Specialty Growers
Living compost and potting blends formulated for vegetable and specialty growers who care about what goes into every pot.
Plant Enthusiasts
Premium coffee-based potting mixes for home gardeners growing happy, healthy houseplants.
Recycling & sustainability
Over 48,744,000 pounds and counting
Pounds of spent coffee grounds repurposed since 2020.
We grow for healthier plants and a healthier planet. When you purchase our products, you support sustainable and responsible soil manufacturing.
Our story
A Fort Worth family of growing brands.
Mayer Materials has made sustainable soils and composts in Azle, Texas since 2006. What began as a better way to compost grew into a family of three brands, each built on the same microbiological process and the same real, recycled ingredients.
We supply nurseries, turf managers, and landscape pros across Texas, and ship our retail brands nationwide from one location.
Three brands, one company
Soil science
Grower guides and research notes.
Research
Texas A&M study: repurposed coffee grounds benefit turfgrass
An AgriLife study found that composted coffee grounds improve turf color, density, and overall soil health. Here is what the research showed.
Soil Science
How spent coffee grounds build a living soil
Cold brew coffee compost is the foundation of every Mayer blend. Here is what it does once it is in the ground, from the microbes it feeds to the minerals it unlocks.
Research
The agronomic value of spent coffee grounds
Spent coffee grounds are a waste stream for most of the world and a raw material for us. A look at why they earn a place in living growing media.