Hi Alan,
Yes, the 'Prince of Orange' is one of the self heading type of Philodendron's, not the vine type. I went looking through my photo's and I was mistaken, my 'Prince of Orange' wasn't one of my large ones, it was about 3' tall before the cold killed it last winter. I'm not sure how large they get but it seems to me someone posted a photo of theirs on cubits or DG that was pretty large. This is a photo of my 'Prince of Orange' taken in 2009:
This was another one of the self heading type of Philo's that I lost to the freeze last winter, Philodendron 'Rojo Congo':
I had another one Philo 'Congo Green' (just like 'Rojo Congo' but with green stems) that was even bigger than Rojo Congo but I don't have pic's of that one. I sure miss my big Philo's!
