If any of you fellow Mainers are making Al's gritty mix for your container/house plants, I'd love to know where in Southern Maine you've found your supplies. If these products are available, I guess I've just never noticed them before; most are things I've never even heard of. I am looking for:

Turface MVP

Haydite/ expanded shale

Espoma Soil Perfecter

Gran-I Grit Starter Grit

Manna Pro Poultry Grit

Thanks!

I plan to check Paris Farmers Union since some of above are often sold in feed stores.