I was looking at Van's pic, thinking it looked like my own stuff.
I buy vermiculite as insulation from Menard's. The fine print on the back of the bag says "product of Sun Gro Horticultural Products of Canada."
Mostly I like vermiculite for covering seeds. It retains moisture well and dries out to a different color and texture on top, so I know when to water it. Best of all, similar to perlite, it does not crust over like peat, blocking sprouts from breaking through.
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