Common Name: Blue Passion Flower
Photograph by: Sl-Ziga
Blue passion flower is an evergreen climbing plant producing annual to perennial shoots from a perennial rootstock. These shoots scramble over the ground, or clamber into the surrounding vegetation, supporting themselves by means of coiling tendrils.
The edible fruit is gathered from the wild for local use, though it is not widely appreciated[
Southern S. America - Argentina, Paraguay, Uruguay, Brazil, Bolivia.
Edges of secondary vegetation and forests[
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A plant of the subtropical to tropical zone, usually above about 500 metres in the tropics. Plants are hardy to about -15°c, if they are cut down to the ground by frost then they can usual regenerate from the base[
Requires a well-drained soil with plenty of moisture in the growing season, otherwise it is not fussy[
]. Dislikes highly alkaline soils[
]. Passiflora species tend to flower and fruit more freely when grown in soils of only moderate fertility[
A very fast growing plant[
]. Roots of outdoor grown plants should be restricted to encourage fruiting[
Plants can flower and fruit in their first year from seed[
The plant has a very long flowering period, from early summer to early autumn, though individual flowers only live for about 48 hours[
]. The flowers are open all night and start to close in the morning[
]. The flowers are delicately scented[
]. The cultivar 'Constance Elliot' is more fragrant[
If fruit is required, especially when the plant is grown indoors, it is best to hand pollinate using pollen from a flower that has been open for 12 hours to pollinate a newly opened flower before midday[
]. The flowers open in sunny weather and do not open on dull cloudy days[
Plants are very tolerant of pruning and can be cut back to ground level if required to rejuvenate the plant[
]. Any pruning is best carried out in the spring[
Plants in this genus are notably resistant to honey fungus[
Fruit - raw or cooked[
]. The unripe fruits are cooked[
], whilst the ripe fruits are eaten raw or made into a refreshing drink[
]. The flavour is not very desirable[
]. The fruit is about 6cm long and 4cm wide, it is partly hollow and contains a small amount of pleasant acid-tasting pulp surrounding a large quantity of seeds[
The flowers can be made into a syrup[
This plant can be used as a rootstock for some of the less hardy members of this genus, conferring on them an additional cold tolerance. Be careful that root suckers do not take over from the grafted plant[
Pre-soak the seed for 12 hours in warm water and then sow in containers. The seed germinates in 1 - 12 months at 20°c. Prick out the seedlings into individual pots when they are large enough to handle, and plant out into permanent positions when large enough.
Cuttings of young shoots, 15cm with a heel[
Leaf bud cuttings.
Cuttings of fully mature wood. Takes 3 months. High percentage[
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