The roots will absolutely grow through the fabric pots. Hey @stepside ......You've had the roots grow through the pots into the ground outside, right?I just did some research on the pot I am using Rhizopots and being a felt like fabric they say you can transplant the pot straight into the soil of the larger pot and the roots will grow through it. Seems like a promising idea if that is the case. I may prick a few holes around the walls to make for easier breakdown of the pot and unseal the bottom. I wonder if this would work as the root balls on these plants grow extremely quick.