I left some parsley, oregano, kale and arugula in the tower for more than 8 weeks and had trouble pulling out the root balls. In a couple cases, the plug stayed in the tower and I had to take the tower apart.
How big do you let the plugs get?
I have seen some pictures of big plants on this forum and I am wondering how the root balls are handled for those?
What is the biggest root ball you have ever seen? Any pictures?