Which Potting Soil or Potting Mix is Best for Microgreens?
Home Microgreens has tested many different potting mixes (and grow mats) to see how well they grow microgreens.
The reviews and recommendations for which potting mix to use are presented below. We will continue to test different brands and if you have a favorite let me know and I will see if I can purchase a bag to test.
Each potting mix recommendation has links to more specific trials, reviews, and ingredients.
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Microgreen Potting Soil Recommendations
Home Microgreens Potting Mix
Home Microgreens Potting Mix is a coconut coir-based mix. The base mix has been used to grow plants on the Space Station. Amendments are all-natural and increase the nitrogen % for faster growth and ultra-mafic rock dust for increased mineral composition.
Pros
- Absorbs water quickly for better watering
- Grows microgreens as well as potting mixes with synthetic fertilizers
- Fine texture for smooth planting surface
- High water-holding capacity
- No synthetic fertilizer
Cons
- Costs more than national brands
- only available in small quantities
More Information
- What is in Home Microgreens Potting Mix
- All grow articles and potting mix trials show how well HM Potting Mix works
Miracle-Gro Performance Organics Container Mix
Scott’s Miracle-Gro Performance Organics Container Mix is one of the more recognizable natural potting mixes and is widely available. It grows microgreens very well. The base is mostly sphagnum moss. There are no synthetic ingredients in the potting mix.
Pros
- Available everywhere
- Relatively inexpensive
- Grows microgreens well
- Fine texture for smooth planting surfaces – some larger pieces of forest products -easily removable
- Retains water quite well – not as good as coconut coir
- Comes in a wide selection of bag sizes
Cons
- Microgreens grown in it seems to slow down after 20 days or so.
- Does not wet very well. Seems to dry out faster than coconut coir mixes.
- Brand owned by a major corporation
More Information
Miracle-Gro Potting Mix
Scott’s Miracle-Gro Potting Mix is one of the more recognizable potting mixes and is widely available. It grows microgreens very well. The base is variable depending on the sale location. Mostly peat or sphagnum moss. The addition of synthetic fertilizers and wetting agents is the main deterrent.
Pros
- Available everywhere
- Relatively inexpensive
- Grows microgreens well
- Fine texture for smooth planting surfaces – some larger pieces of forest products -easily removable
- Retains water quite well – not as good as coconut coir
- Comes in a wide selection of bag sizes
Cons
- Contains synthetic fertilizers
- Contains wetting agents
- Brand owned by a major corporation
- Plastic bags contain holes allowing possible fungus gnat infestation