Can I use a burlap 'bag' as an upside down container for growing vegetables?
Using Burlap for Upside Down Gardening
Certified GKH Gardening Expert
I'm not too sure as to how you would gfet a 'bag' to work for this; however, if you have a plan, you could always give it a shot. If you do experiment with this and find success, we would love for you to share the results.
In the meantime, here is more information on gardeing upside down: https://www.gardeningknowhow.com/special/containers/upside-down-gardening.htm