Passiflora x colvillii is a hybrid passionflower, a cross between Passiflora incarnata and Passiflora caerulea,
which was first bred in 1824 at Colvill’s Nursery in England.

This evergreen climbing plant can grow up to 10 meters high and wide and grows quickly.
It produces striking white-blue flowers with a diameter of about 7-11 cm,
which bloom from June to September. The flowers are hermaphroditic, pollinated by bees and can give off a slight scent.

Hardy to USDA Zone 7 (down to about -10°C or 14°F), can tolerate light frost, but may require winter protection in colder climates,
such as mulch or indoor potted plants. It prefers well-drained soil, full sun to partial shade
(although it blooms less in the shade), and moderate watering.
The plant is vigorous, requires little maintenance and can be pruned vigorously to rejuvenate.