What DID they recommend.?
They must have a soilless mix they recommend for seed starting I would think.
You can make your own. Should be able to find what you need or alternatives.
Lots of recipes that work. Just want it clean. Heat treat in your oven if concerned.
Bagged seed starting mix usually contains 50% Peat (sphagnum) Moss.
An alternative is Coir.
Much cheaper to mix your own.
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