First time grower of Passion flower
I was given a small cutting of a passion flower(passiflora caerulea) 18 months ago. I planted it out in the spring of 2004 and not knowing anything about it just left it to chance. I covered the roots with straw in the winter, it is now nearly 8 foot high and supporting more than 60 flowers. I need to prune it before it escapes onto the roof over the front door, when is the best time to do this and how far can I prune it back?
The stem was attacked during last year and has some of the outer bark missing, will this leave the plant open to any infection or attack?