Q.Need help with my indoor growing medium recipe.
How much vermiculite, perlite, gypsum, limestone, & mycorrhizae do I add to 10 gallons of sphagnum peat moss? Trying to replicate a popular growing mix.

GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on March 3, 2020
This recipe is similar:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soilless-growing-mediums.htm
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