Pillar rose question
I'm still a relatively new rose gardener but the idea of pillared roses appeals to me: visually stunning vertical element and takes limited precious space in my urban garden.
But one thing I wondered: what do you do when the rose is still growing? Do you just wait until the rose is more or less full-sized and then pillar? Do you pillar halfway up the structure and then keep tying it around as it grows? Do you untie the rose and re-tie it as it grows?
I was looking at an Explorer climbing rose--maybe a William Baffin--to be hardy here in Toronto and (from what I read) not requiring any special winter protection. But I just wasn't sure about what to do while the rose is still growing, and when to pillar it.
One other question: what makes a good pillar? Do I need to cement in a post? Or do iron frames (like obelisks or tripods) have enough weight to keep them from being blown over?