I use 2" PVC from Home Depot. Wifey made me paint the poles green so they blend in a bit.
10' PVC + 2' PVC (cut to size from another 10' PVC) + 2" PVC 'Y'
Didn't glue anything. Between the 10' and 2' is a 2" coupling connector.
The 'Y' goes against the curve of the flower where it comes from the p-stem
This year I'm using bamboo and placing a short 2" (green painted) PVC. Mix/Match
Bamboo X2 80Lb fishing line
Good Luck