Passiflora × exoniensis

Passiflora × exoniensis

Passiflora x exoniensis or Exeter Passiflora is a hybrid of Passiflora antioquiensis x Passiflora var. mollissima, developed by Veitch, an English horticulturist, in 1872.

The origin is not certain because during the two world wars many plant collections were lost.

It blooms abundantly from late summer to fall when planted outdoors and even in the winter in a cool greenhouse or conservatory.

It blooms also quite young, it does not need to produce meter long stems before flowering.

During the hottest summer months it enters a rest period. Flowering takes place around 20-25 °C daytime temperatures with a 10 °C difference in night temperature.

Description:

Passiflora x exoniensis is a vine with pubescent vines up to 4-5 meters long. The stem is almost cylindrical and striate.

The leaves are on a petiole of 1.5-3.5 cm long. The leaves are three-lobed, deeply cut, 20 cm long and to 17.5 cm wide.

The flowers are drooping, on a peduncle of 6-10 cm, 10-12.5 cm in diameter, purplish red. The sepals are purplish red, oblong, to 5.6 cm long and 1.7 cm wide; the petals are purplish red; the corona has 1 or 2 sets of filaments with purple band and white teeth, about 0.1 cm long.

The fruit is oblong to oval, 7.5-9 cm long, yellow when ripe and edible.

It produces no pollen but can be fertilized by hand by other Passiflora species to form fruit.

Use:

Ornamental

Nomenclature:

Common names:

Banana Passion Flower, Banana Passion Fruit, Curuba, Exeter Passiflora, Tacso

Synonyms:

Passiflora exoniensis, Tacsonia x exoniensis
NB: Passiflora x exoniensis is often confused with Passiflora antioquiensis. The difference is in the flowers: they have the same color but the flowers of Passiflora antioquiensis are smaller and less noticeable. The flower stems of Passiflora antioquiensis are 60-90 cm long while those of Passiflora x exoniensis are only 30 cm long.

Etymology:

Passiflora: from the Latin passio (Passion) and flos (flower)
Exoniensis: derived from  Exonia, the latinized name of the city of Exeter (UK) where the Veitch Nurseries were established

Origin:

Veitch nursery, Exeter, United Kingdom, 1872

Habitat:

Only in culture



Hardiness:

USDA Zone 9-11

It tolerates down to 5 °C and brief periods down to -4 °C.

Care:

Soil:

Nutritious and well drained

Light:

Light, protect against sunlight

Water:

Water abundantly

Feed:

Fertilize every 2-4 weeks during the growing season

Temperature:

Preferably at least 10 °C, tolerates 5 °C and even very light frost for short periods

Propagation:

Seed, cuttings, layering

Sowing instructions:

  • use preferably fresh seeds
  • scarify the seeds with sandpaper or sand
  • soak the seeds in water at room temperature for 24h
  • plant in sterile sowing substrate a 1 cm depth
  • provide soil heating and switch the heating off at night so that the temperature fluctuates
  • keep the substrate moist
  • do not discard the seeds if they have not germinated after a few months, it can take more than 6 months

Cutting Instructions:

Take cuttings from semi-hard wood in summer.

Image sources

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