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Miller Soils

Seed Start Pro


Save time and help your seeds, starts, and clones grow & thrive with our all-natural, ready-to-use seedling mixes!

Seed Start Pro is an all-natural grow media to start seeds with nutrient support that allows both seedlings to thrive and the grower to save time.

Ready to go out of the bag, Miller Soils has added endo & ectomycorrhizae and biochar to ensure beneficial microbes are present to create fertile soil. Our research-tested blend provides adequate draining and maintains a moisture level that is ideal for newly formed root systems.

  • 5-7 of weeks of nutrients to support your seed starts
  • A healthy ecosystem of microbes provides a boost for roots to grow strong within the first initial weeks


Canadian Sphagnum Peat Moss, Perlite, Compost, Vermiculite, Organic 5-5-3 Fertilizer, Endo & Ecto-Mycorrhizae, Biochar

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.