Passiflora caerulea (Blue passion flower, tokei-so)

Native to Brazil. Introduced to Japan in the early Edo period (early 17th century).

Its Japanese common name, tokei-so (meaning “clock plant”), derives from how the plant’s pistil branches in three, which resembles the three hands of a clock. The plant produces brightly colored flowers and is popular for its ornamental value. Bears the familiar passion fruit.

Here are some points to bear in mind when growing tokei-so. First, choose a sunny location. As for temperature, this half-hardy plant can tolerate some degree of cold. And it thrives in well-drained soil that is slightly acidic to neutral.

Tokei-so can be grown from seed or from cuttings. To grow from seed, sow the seeds in spring and provide them with plenty of water and moderate sunlight. To grow from cuttings, slice off the end of healthy stems in fall and place the cuttings in moist potting soil so that they will take root.

Whether planted in a flower bed or a pot, this plant will delight you with its graceful flowers and passion fruit. Add a touch of elegance to your garden or porch with a tokei-so, and enjoy a soothing moment looking on these distinctively colored flowers.