Yes, about $5 for an 8qt bag. But I only start a small number of plants, so it's not a big expense. I might experiment making my own "high drainage" seed starting mix, but it's awfully easy just to pick up a bag at Menards. Potting mix (like almost everything) has really increased in price this year.
Just out of curiosity, what would be the objection to sand in a seed starting mix? (My homemade cactus mix for my wife is apx. equal volumes of peat, perlite, and sand.) I think if I were trying to use this for seed starting, I would at least double the peat, or maybe even more.
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