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How to successfully grow a passion flower indoors

Stacey Nguyen
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Native to Central and South America, the passion flower is a gorgeous and Instagram-worthy plant that’s often grown in gardens. But if you don’t have the outdoor space for it, you can still grow the passion flower as a houseplant in your apartment or house — it’s low maintenance and flowers easily! In fact, this plant is generally hardy only in zones 7 to 10, so you’ll likely need to bring it indoors anyway if you live in a region where temperatures drop dramatically during the winter. If you’re wondering how to maintain a passion flower indoors, keep reading ahead to find out!

Passion flower plant closeup

Why you would want to grow a passion flower plant

The passion flower has been used in both edible and topical products and ailments. Its health effects haven’t been researched extensively, but the passion flower and its fruit have long been promoted for helping with anxiety and sleep problems in addition to soothing pain and skin irritation. Beyond its potential benefits, the passion flower is also a gorgeous climbing vine. It consists of wiry stems with dark green leaves that fan out and short-stalked flowers with a saucer shape and oval buds. Each fragrant flower has five to 10 petals surrounding colorful filaments and golden anthers — the varieties differ mostly by color, though you’ll most commonly find these plants in shades of purple and blue. Outdoor passion flowers yield two-inch orange fruit, but indoor plants seldom produce fruit.

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Blue passion flower

How to grow a passion flower indoors

Maintaining a passion flower in a container indoors can take extra work, and you’ll want to be diligent about watering and feeding your plant. That said, it’s possible to nourish a thriving passion flower inside your home by following the tips below!

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  • Light: Passion flowers grow best in bright light. Give your plant at least four hours of direct sunlight per day. Alternatively, keep your plant under a grow light for around 12 hours a day if you don’t get enough natural light in your home.
  • Temperature: Passion flowers appreciate warmth during the growing season, but they need a winter cooling period of around 50 degrees Fahrenheit to flower during the growing season. Some varieties are hardy down to 20 degrees, but these plants do best in temperatures between 65 and 80 degrees.
  • Soil: Place passion flowers in a well-draining potting mix. They’ll also appreciate spacious containers so that their roots can spread out.
  • Water: Keep passion flowers thoroughly moist during the growing season, but don’t let them sit in water. Even during the winter, you want to prevent the soil from drying out completely. Moist air is also a plus — passion flower plants appreciate high humidity levels. If you use a heater or an air conditioner, you’ll want to use a humidifier or keep your plant near a tray of water.
  • Fertilizer: During the spring and summer, feed your plant a balanced, diluted liquid fertilizer at half strength every month.
  • Prune: Passion flowers are prolific growers, so don’t hesitate to cut them back. You can prune your plant back to its strongest vines during early spring — this is an opportunity to remove damaged leaves and promote bushier growth. Keep the remaining vines between 15 to 20 inches long and make sure not to remove any flower buds while you’re at it.

How to propagate a passion flower

The best time to propagate a passion flower is during the spring or summer. Take a 3- to 4-inch stem cutting and remove the lower leaves to expose the nodes. You can choose to dip your cuttings in a rooting hormone, but it’s not necessary. Place the cutting in a potting mix and keep your pot in a warm and bright environment; the roots should form roughly one month later. Alternatively, you can also grow passion flower plants from seeds. After soaking the seeds, place them in a moistened potting mix and give them plenty of bright light so they can germinate and sprout. This method, however, will require more time and may not be as successful.

A cluster of passion flower blooms

How to train passion flower plants

In tropical rainforests, passion flower plants cling to tree trunks with their tendrils. When you keep passion flowers as houseplants, add thin supports that the tendrils can cling onto. Guide young plants with wire hoops or a trellis for an attractive display in your home. It’s best to start with a young plant and to go tendril by tendril at the beginning.

With beautiful blooms and foliage that can climb, passion flowers make desirable plants out in the garden and inside the home. Even when kept indoors as houseplants, passion flowers can be prolific growers. With bright light, ample watering, and sufficient space, you can train a lush and quick-growing plant inside your home!

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