Passion flower Passiflora caerulea blue - Hardy plantBeautiful and exotic. The aromatic, blue passionflower (Passiflora caerulea) makes our fence so much more appealing! The winter green climbing shrub has large blue flowers, with pure white petals. You can also plant the exotic passion flower in a lovely flowerpot. For extra butterflies and bees! The flowers bloom all summer. The plant produces edible fruit in the second year after planting. The plant needs the support of a climbing rack or fence to