Passion Flower Pruning

Question

I bought a passion flower vine this summer. It was 10″ tall. I planted it outside in the ground on a trellis and it gets 3-4 hours of direct noon sun. Well, it flurished even in our hot Oklahoma summer on record that reached 110-112 degrees with no rain. It is now 10′ tall and covered with blooms. I want this to come back next year. Our winters can be as brutal as our summers. This fall I plan to heavily mulch around the base. Everything I read does not mention whether or not I shold prune the vine. Do I cut it back once it goes dormant or just let it go?

Answer 1

While these plants will normally die down for winter dormancy, thus, not requiring too much pruning, since yours is quite large, cutting it back by about a third (or even half if not more) might make it easier. Here is an article or two on overwintering passion flowers that you may find helpful: https://www.gardeningknowhow.com/ornamental/vines/passion-flower/preparing-a-passion-flower-vine-for-winter.htm
https://www.gardeningknowhow.com/ornamental/vines/passion-flower/passion-flower-winter-care.htm