Passiflora Caerulea Growing and Caring – Gardening Guide


Passiflora Caerulea Growing and Caring – Gardening Guide

Passiflora Caerulea Growing and Caring - Gardening Guide

Passiflora Caerulea, commonly known as Blue Passion Flower, is a beautiful vine that can add a touch of tropical elegance to any garden. It is a climbing plant with intricate flowers that make it an attractive addition to any landscape. In this gardening guide, we will discuss everything you need to know to successfully grow and care for Passiflora Caerulea.

History and Origin of Passiflora Caerulea

Passiflora Caerulea is native to South America and was first discovered by Spanish explorers in the 16th century. It has since been introduced to other parts of the world, including Europe and Asia, where it has become a popular garden plant.

Choosing the Right Location for Passiflora Caerulea

The first step in successfully growing Passiflora Caerulea is choosing the right location for the plant. This plant requires full sun to partial shade, so it is best to choose a spot in your garden that receives plenty of sunlight.

Soil Requirements

The Blue Passion Flower prefers well-drained soil that is rich in organic matter. Before planting, prepare the soil by mixing in some compost or well-rotted manure to improve its fertility and structure.

Planting Passiflora Caerulea

Passiflora Caerulea is typically grown from seed or cuttings. If you are growing from seed, sow the seeds in a tray filled with a good quality potting mix and keep the soil moist. Once the seedlings have grown to a suitable size, transplant them into larger pots or directly into your garden.

Watering and Fertilization

The Blue Passion Flower requires regular watering, especially during the growing season. It is important to keep the soil moist but not waterlogged, as this can lead to root rot. Fertilize the plant with a balanced fertilizer every four to six weeks during the growing season to promote healthy growth and flowering.

Pruning and Training

Passiflora Caerulea is a climbing plant and can benefit from some light pruning and training to keep it under control and encourage healthy growth. Train the vines onto trellises or other supports, and prune away any dead or diseased wood.

Pests and Diseases

Like all plants, Passiflora Caerulea is susceptible to pests and diseases. The most common pests that affect this plant are aphids and spider mites, which can be treated with insecticidal soap or neem oil. The plant can also suffer from fungal diseases, such as powdery mildew, which can be prevented by ensuring good air circulation around the plant and avoiding overhead watering.

Passiflora Caerulea Care

Here are some tips for caring for Passiflora caerulea, the blue passion flower:

• Plant in a sunny location with well-drained soil and a trellis or other support for the vines to climb. Blue passion flowers require full sun for at least 6 to 8 hours per day to produce flowers and fruit.

• Water regularly to keep the soil moderately moist. Water when the top inch or so of soil is dry. Do not let the soil dry out completely.

• Fertilize during the growing season. Use a balanced fertilizer with equal parts nitrogen, phosphorus, and potassium, such as 10-10-10. Follow the directions on the product packaging for how much and how often to fertilize.

• Prune to control size and shape. You can prune the vines back by 1/3 after flowering. Also, remove any dead or damaged growth.

• Mulch around the base of the plant to help retain soil moisture, reduce weeds, and provide extra nutrients. 2 to 3 inches of organic mulch is typical.

• Repot if needed. Watch for roots protruding from the drainage holes, which indicates the plant is pot-bound and needs a larger container. Move up one size and replenish soil around the roots.

• Bring indoors before frost. If growing blue passion flowers in a pot or container, move the planters indoors if freezing weather is expected. Allow the top few inches of soil to dry out between waterings over winter.

• Watch for common pests such as spider mites, aphids, and caterpillars. Treat with insecticidal soap or neem oil sprays. Reapply as needed.

• Expect flowers and fruit in late summer. Blue passion flower produces exotic purple and blue flowers from July through September, followed by edible orange fruit in fall.

• Consider hand pollinating for a better fruit set, especially in colder climates. Use a small paintbrush to transfer pollen between flowers.

With the right location and care, blue passion flowers can thrive and produce abundant flowers and fruit. Provide full sun, fertile well-drained soil, regular watering and feeding, and pruning to support growth and harvest.

Passiflora caerulea vs Incarnate

Passiflora caerulea and Passiflora incarnata are both species of the Passiflora genus, commonly known as passionflowers. While they share similarities in terms of appearance and growth habits, there are also distinct differences between the two.


Passiflora caerulea, also known as blue passionflower, has large blue and white flowers with a prominent central structure. The leaves are dark green and three-lobed. Passiflora incarnata, also known as maypop, has smaller, fragrant flowers that are typically pale lavender in color with a distinctive central structure. The leaves are also three-lobed but are a lighter shade of green compared to Passiflora caerulea.

Growing habits:

Both species are perennial vines that grow well in warm, tropical, and subtropical climates. Passiflora caerulea is hardy to USDA Zones 6-11 and can grow up to 30 feet in length. Passiflora incarnata is hardy to USDA Zones 6-9 and grows up to 20 feet long. They both require well-draining soil and support structures to climb on.


Both species of passionflower have been used for medicinal purposes for centuries. Passiflora incarnata is used for anxiety, insomnia, and other nervous conditions. Passiflora caerulea is also used for anxiety, as well as for digestive issues, inflammation, and pain relief. In addition to their medicinal uses, both species are also grown for their ornamental value, with their colorful flowers and attractive foliage.

While Passiflora caerulea and Passiflora incarnata share similarities, such as being perennial vines that require support structures and are used for medicinal and ornamental purposes, they also have distinct differences in appearance and growing habits. It is important to understand these differences in order to properly care for and appreciate each species of passionflower.

Is Passiflora Caerulea Fruit Edible

Passiflora caerulea, commonly known as the blue passion fruit, produces edible fruit. The fruit is oval-shaped, about 5 to 7.5 cm in diameter, and has an orange rind surrounding fleshy pulp filled with numerous seeds. The pulp has a tropical flavor and aroma and is used to flavor drinks, desserts, salads, and yogurt. However, some parts of the blue passion fruit plant are not edible and may be toxic.

The blue passion fruit pulp:

• Is edible and safe for most people. It has an exotic, tropical taste with hints of citrus and berry.

• Is nutritious, containing antioxidants and vitamins A, C, and potassium.

• Is used commercially to make passion fruit juice, ice pops, jam, and coulis. Locally it is used in desserts, salads, and drinks.

• Has numerous small edible seeds that are crunchy and sometimes mistaken as inedible. The seeds are safe to eat for most people in normal amounts.

Other parts that are not edible and potentially toxic:

• The rind, membranes, and skin surrounding the pulp. These have a bitter taste and contain cyanogenic glycosides.

• The leaves, stems, and flowers. These also contain toxic compounds and substances that can cause gastrointestinal issues and irritate the skin.

• Large amounts of edible seeds may upset some people’s stomachs. Though not toxic, very high consumption of the seeds is not recommended.

So in summary, the pulp and seeds of the blue passion fruit are edible and delicious for most people when consumed in normal amounts, but other parts of the plant should be avoided as they may be toxic. Moderation is key, as with many foods. When in doubt, do some research on the specific plant and fruit.


In conclusion, growing and caring for Passiflora Caerulea is a rewarding experience that can add beauty and interest to any garden. By following the guidelines outlined in this gardening guide, you can successfully grow and care for this beautiful plant and enjoy its stunning flowers for years to come.

Remember to choose the right location for the plant, prepare the soil properly, and provide regular watering and fertilization. With some light pruning and training, you can keep the plant under control and encourage healthy growth. Keep an eye out for pests and diseases, and treat them promptly to prevent any damage to your plant.

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