Turned Andy and GA6 onto them. EZ Roots pots and aeration frames. I like em and have used them for a few years. They say to roll the liner over the edge of the frame, but you can get more soil in there if you dont.
Pretty cheap too!
[video=youtube;Ce0oC16nDgw]https://www.youtube.com/watch?v=Ce0oC16nDgw[/video]
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[video=youtube;Ce0oC16nDgw]https://www.youtube.com/watch?v=Ce0oC16nDgw[/video]