Passion flower or passiflora (of the Passifloraceae family) produces large, exotic blooms in the summer. The flowers attract birds, bees, butterflies and bats. The passion fruit vine also belongs to the Passifloraceae family. Gardeners should prune passiflora annually in the fall, when the vine ceases flowering for the year. While this large plant family includes many types of passiflora—including some with edible fruits and some without—care and pruning requirements for this vine remain the same. Gardeners must prune to keep passiflora from becoming overgrown or developing disease.
Cut back dead, diseased or damaged parts of the passiflora vine to keep the plant healthy. Spray the clippers with disinfectant between each cut to avoid contaminating healthy parts of the plant.
Remove tendrils that encircle or compress other tendrils, as this can choke or damage parts of the passiflora. Snip off the offending tendrils at their base.
Trim long, overgrown stems back by one-third to promote lateral branching and the development of new flowering growth. Clip back the top of the passiflora vine if it has grown over the trellis.
Remove up to one-third of the stems on the passiflora vine, eliminating those that bear fewer flowers.