A question for you Vermiculite experts...
I called around and have found the Palmetto brand "Course A-3" grade available at one Feed & Seed store. It seems this is the grade that is popular for the Square Foot Gardening mix so that's likely why it's available. Is this the grade that would also work well for seed sowing? Another Feed & Seed store says they will have "Medium" and "Course" in by the end of the week (I'm not sure of the brand.) Any guess as to which is best for seed sowing? Unfortunately, you can't see through the bags to look at the size of the particles.
http://palmettovermiculite.com...
Thanks for any info!
