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Passiflora plants, commonly known as passion flowers, can be grown outdoors. However there are many species and cultivars that need the protection of a greenhouse or conservatory to grow well. Passion flowers are grown for their beautiful flowers. They comprise an open circle of petals inside which sit a ring of bright coloured filaments that blend in contrast with colour of the petals. Fruits flows the flower and these are edible. The flowers come in shades of white, red orange-red, pink and purple. They flower throughout the summer.