Soil Amendments

Need help with my indoor growing medium recipe.

Zone 45680-7718 | Anonymous added on March 3, 2020 | Answered

How much vermiculite, perlite, gypsum, limestone, & mycorrhizae do I add to 10 gallons of sphagnum peat moss? Trying to replicate a popular growing mix.

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Certified GKH Gardening Expert
Answered on March 3, 2020
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