My tomato cages are never tall enough nor tough enough to handle 12' tomato vines. Careful if choosing woodtree saplings for towers- you dont want them rotting faster than you can build them- nor rooting either. Cattle panels make good tunnels and support- but you want to reach the fruit so curve them and use both sides.
Oxnard isnt going to be really easy to find wooden supports- cattle panels at Tractor Supply run 10-12$ - but have no clue how many you plan on planting!
