Henderman;
I height can vary depends on that you have. For my perennial Hibiscus a 5 foot section works well, I also use shoe strings to tie up the plant. I have TX Star Red that is a small plant but use a 4 footer for it. TX Star Alba is huge so a 6 footer. Just regular size PVC not the wide stuff. I started this on the TX star last year and before I knew it, it shot upward to 6 foot.
I also have a tool to feed the roots for the Brugmansia. Scream if you want me to post it.
