The Q&A Archives: Passionflower as a Houseplant

Question: I would like some information on how to keep a passionflower vine (Passiflora caerulea) as a houseplant. What container size is sufficient for this vine? What should I grow the vine on?

Answer: Passiflora caerulea has flowers with intricate structure but despite the delicacy of the flowers, there's nothing delicate about the plant. It is a rampant climber and can outgrow its welcome if not cut back hard each spring. Provide your plant with average household warmth and give it the sunniest spot available. Keep the soil moist during the spring and summer months and reduce the frequency of watering during the winter (when the plant grows slowly). Mist the leaves occasionally during the growing season and repot in fresh soil each spring. Depending upon the size of your plant, you can probably start out in a 1-gallon container. Provide a trellis support, or soft strings for the tendrils on the vines to grasp as it grows. Passiflora is quite adaptable and will happily climb wherever it can get a foothold.

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