A local nursery now carries 1 cu ft bags of "growing medium" and it looks great! It's 40-50% composed pinebark plus new FL peat, Canadian peat, cypress sawdust and a wetting agent and it comes from Florida Potting Soils. The bag costs $5 and that makes it a bit cheaper than Miracle Grow and substantially cheaper than Fafard's 3B mix I usually use. I did add some perlite to it to make it lighter. The good news is that the bags weigh about 25 lb. and they pack easily in the trunk of my car. Man, it's going to save me a ton of money this year because I need to remove some soil and replace it in almost all of my 10 boxes.
I have big 2 bags of the Miracle Grow stuff. Guess I'll use it when I move and replant tropicals in the shade garden. Don't want to throw it out, but it will not be used in the daylily boxes!!!