This post in this thread has a great idea for a pot growing medium: pure compost that was made by your municipal locally. It should be sustainable, and it will probably be very cheap. Do you think that would work for your seed-starting needs?
This post in this thread has a great idea for a pot growing medium: pure compost that was made by your municipal locally. It should be sustainable, and it will probably be very cheap. Do you think that would work for your seed-starting needs?