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Miller Soils

Red's Premium Biochar Blend


Red’s is a bio-based container media designed to embody the best traits of living soil with the benefits of a balanced soil food web.

We build this soil-mix to suit professional operations, which require efficiency and ease-of-use combined with quality – which means a quality crop for the grower. Red’s mix is alive. It’s packed with vegetation-based compost and worm castings, creating a rich environment of beneficial bacteria. Combined with biochar and natural mineral sources, this rich ecosystem is nested in a matrix of components that optimizes aeration, porosity, and drainage, so the soil gets the water it needs while maintaining aeration. The result is good for the soil microbes and GREAT for the plants. No animal or human manures in our products! Biochar provides several benefits to the soil food web while increasing water-holding capacity, decreasing bulk density, buffering pH, moderating nutrient release, and more – for decades. High-quality compost adds a microbial environment rich with humic acids, which are the chemical compounds making up humus and related compounds humates – the defining material of compost.


  • Place starts in containers full of Red’s, and water until the soil-mix is a field capacity. This mix is NOT intended for seed-germination. We recommend our SEED START PRO!
  • After a few weeks, you may need to replenish some of the nutrient stocks in the soil food web for heavy feeders. The key is to feed the soil-mix, not just the plants. Direct feeding with solutions and chemical fertilizers harms the soil organisms. We urge the grower to feed the soil with nutrient-rich compost teas, which the soil microbes especially bacteria and other critters will process. This recommendation will save on unnecessary chemical costs.
  • Avoid over-watering. Overwatering creates anoxic and anaerobic conditions, which can build up in containers, especially in the perched water-table near the bottom of the container. Since Red’s mix is teeming with life, overwatering can kill or thwart the optimal nutrient-cycling microbes and encourage pathogenic microbes. Save on watering costs with this recommendation.


Coconut Coir, Perlite, Canadian Sphagnum Peat Moss, Pumice, Compost, Biochar, Worm Castings, Soybean Meal, Fish Meal, Oyster Shell Flour, CalPhos, Fish Bone Meal, Crustacean Meal, Kelp Meal, Dolomite, Glacial Rock Dust, Endo-Mycorhizzae, Yucca Extract


Who We Are

Miller Soils is a family-owned soil business specializing in biochar-based custom blends and grow media.

Our Commitment

We’re committed to both our customers and the environment, so we produce only the finest quality all-natural products.

Why Biochar?

Biochar is made from renewable & organic resources. Biochar can rejuvenate soil, reduce nutrient runoff, and increase water-holding capacity.