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Passiflora caerulea is often confused with:
Passiflora incarnata Flower
Plants that fill a similar niche:
Clematis armandi Clematis armandii
Clematis crispa Clematis crispa
Passiflora incarnata Flower
Passiflora caerulea has some common insect problems:
Phlox Plant Bug and Other Lopidea Plant Bugs
Barnacle Scale

Common Passionflower Passiflora caerulea

Phonetic Spelling
pas-si-FLOR-ah se-ROO-lee-ah
This plant has medium severity poison characteristics.
See below
Description

Blue passionflower is a vining, herbaceous perennial or perennial in the passion vine family (Passifloraceae). It is native to parts of South America and is the national flower of Paraguay. The genus name, Passiflora, relates to the crucifixion of Jesus Christ. In the 15th to 16th century, Roman Catholic priests in Latin America used parts of the flower to symbolize the Passion of Christ. The species epithet, caerulea, means “blue.”

It grows well in partial shade to full sun in moist soil with good drainage. Blue passionflower adapts to clay, loam or sandy soils and is not particular about soil pH. It likes high humidity. It grows 3 to 6 feet wide and reaches 10 feet to 40 feet tall and may be pruned after flowering to reduce the plant’s size. When pruning, cut back the year's growth by one-half. Deadhead the flowers regularly. The plant may be propagated by seed or stem cutting. 

Blue passionflower has showy blue and white flowers and orange fruits.The unusual saucer-shaped flowers on long stems typically appear from early summer to early fall. The fruits appear late summer through the fall and start green then ripen to yellow and deep orange. It is evergreen in warm winter climates and deciduous in temperate climates.

It is a good choice for arbors, containers, cottage gardens, trellises, walls and fences. The tendrils cling to trellis, arbors or fences, but will not damage surfaces. Bees and butterflies are attracted to the beautiful flowers.

Insects, Diseases and Other Plant Problems: Fungal diseases are possible if the plant doesn’t have good air circulation. The roots may also develop fungal diseases if an excessive amount of top growth is removed all at once.

See this plant in the following landscape:
Cultivars / Varieties:
  • 'Constance Elliot'
    White flowers
'Constance Elliot'
Tags:
#showy flowers#full sun tolerant#herbaceous perennial#edible fruits#larval host plant#nectar plant summer#unusual flowers#vine#butterfly friendly#arbor#bee friendly#perennial vines#perennial#fence#trellis#hs303
 
Cultivars / Varieties:
  • 'Constance Elliot'
    White flowers
'Constance Elliot'
Tags:
#showy flowers#full sun tolerant#herbaceous perennial#edible fruits#larval host plant#nectar plant summer#unusual flowers#vine#butterfly friendly#arbor#bee friendly#perennial vines#perennial#fence#trellis#hs303
  • Attributes:
    Genus:
    Passiflora
    Species:
    caerulea
    Family:
    Passifloraceae
    Life Cycle:
    Perennial
    Recommended Propagation Strategy:
    Seed
    Stem Cutting
    Country Or Region Of Origin:
    Bolivia to Brazil and N. Argentina
    Wildlife Value:
    Host plant to butterflies. Pollinators attracted to the flowers.
    Edibility:
    Plant parts used as a stress-relieving tea. The fruit, while edible, tastes bland.
    Dimensions:
    Height: 10 ft. 0 in. - 40 ft. 0 in.
    Width: 3 ft. 0 in. - 6 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Herbaceous Perennial
    Perennial
    Vine
    Woody Plant Leaf Characteristics:
    Deciduous
    Semi-evergreen
    Habit/Form:
    Climbing
    Growth Rate:
    Rapid
    Maintenance:
    Medium
    Texture:
    Medium
    Appendage:
    Tendrils
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    Loam (Silt)
    Sand
    Soil pH:
    Acid (<6.0)
    Alkaline (>8.0)
    Neutral (6.0-8.0)
    Soil Drainage:
    Good Drainage
    Moist
    Available Space To Plant:
    6-feet-12 feet
    NC Region:
    Coastal
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b
  • Fruit:
    Fruit Color:
    Green
    Orange
    Fruit Value To Gardener:
    Edible
    Showy
    Display/Harvest Time:
    Fall
    Summer
    Fruit Type:
    Pome
    Fruit Length:
    1-3 inches
    Fruit Width:
    1-3 inches
    Fruit Description:
    The fruit, while edible, tastes bland. The plant produces egg-shaped green fruits which when ripened, turn yellow to a deep orange color from late summer to fall. The fruits measure approximately 2.5 x 1.5 inches and are partly hollow. Inside the fruit, there is a small amount of deep red colored pulp surrounded by a large number of seeds. To gather seeds, allow the pods to dry on the plant. Break open pods to collect the seeds. The seeds are 4mm long and silvery brown in color. Sow seeds outdoors in the fall. During the winter, sow seeds in a cold frame or unheated greenhouses.
  • Flowers:
    Flower Color:
    Blue
    Pink
    White
    Flower Inflorescence:
    Solitary
    Flower Value To Gardener:
    Showy
    Flower Bloom Time:
    Fall
    Summer
    Flower Shape:
    Saucer
    Flower Petals:
    7 - 20 petals/rays
    Flower Size:
    1-3 inches
    Flower Description:
    The flowers bloom on long stalks. They are solitary, sometimes fragrant, and measure 2.5 to 3 inches wide. The flower is saucer-shaped with 10 tepals that have rounded tips. The tepals are white to whitish-pink on the inner side and greenish on the outer side. There is a circle of blue filaments in the middle of the flower. The filament is blue on the outer half, white in the middle, and dark purple-black at the base. In the center are the 3 styles which are purple, and the 5 stamens are greenish-yellow. They bloom early summer to early fall.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Semi-evergreen
    Leaf Color:
    Green
    Leaf Feel:
    Glossy
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Leaf Shape:
    Palmatifid
    Leaf Margin:
    Entire
    Lobed
    Hairs Present:
    No
    Leaf Length:
    3-6 inches
    Leaf Width:
    3-6 inches
    Leaf Description:
    The leaves are shiny, hairless, green, alternate, and simple in type. They have smooth margins. They are 4 to 6 inches wide, palmately lobed, and the lobes are oblong. They are typically 5 lobed leaves, but some leaves may be 3, 7, or 9 lobed. A twining tendril is at the base of each leaf, and each tendril is approximately 2 inches to 4 inches long.
  • Stem:
    Stem Color:
    Brown/Copper
    Green
    Stem Is Aromatic:
    No
    Stem Surface:
    Smooth (glabrous)
    Stem Description:
    The stems are green and brown, hairless, and have coiling green tendrils.
  • Landscape:
    Landscape Location:
    Container
    Patio
    Vertical Spaces
    Landscape Theme:
    Butterfly Garden
    Cottage Garden
    Design Feature:
    Screen/Privacy
    Attracts:
    Bees
    Butterflies
    Resistance To Challenges:
    Deer
    Heat
    Humidity
    Rabbits
    Slugs
    Problems:
    Poisonous to Humans
    Problem for Cats
    Problem for Children
    Problem for Dogs
    Problem for Horses
  • Poisonous to Humans:
    Poison Severity:
    Medium
    Poison Symptoms:
    Severe nausea, vomiting, drowsiness, and episodes of irregular heartbeat.
    Poison Toxic Principle:
    cyanogenic glycosides
    Causes Contact Dermatitis:
    No
    Poison Part:
    Leaves
    Stems