Pine bark fines at Home Depot?
While at Home Depot today I found something that *might* work for pine bark fines. I guess Al would have to give us the definitive opinion on whether it's usable or not so I don't want to get everyone's hopes up.
The bag was white with orange writing and was labeled as "pine bark mulch" and the pine bark look very finely shredded. Nothing over 1" in size, most of it much smaller. Certainly you'd have to sift through the bark and remove a lot of fine material but you might be able to use at least some of the material.
The bark was not composted at all. They also had a bag of large pine bark, the kind you'd use in garden beds in a blue and silver bag, right next to the shredded pine bark.
I didn't have my truck or else I would have grabbed some. I hope to go there again this weekend and will grab a bag. Even if I can't use it in containers I could use it somewhere in the garden.
So if you are near a Home Depot you might want to look into this as at least a possibility.