How to Grow Japanese Iris. Japanese Iris can be grown outdoors from seed by sowing at a depth of 6mm in the autumn or winter. It is best to sow them into flats in a shady part of the garden. After they have been exposed to the elements for a month or so (frost required), bring the flats indoors until the spring.he Japanese Iris and Oriental Iris are the common names for Iris Kaempferi / Iris ensata. They are hardy perennials, and bloom in the summer. Japanese Iris has sword shaped leaves and carries blue, white or purple flowers atop 70 to 90 cm long stems.
Clandestine means secretive, so a clandestine affair is an affair  that is kept hidden. It usually refers to secretive romantic  relationships. 2 people found this useful.
Use the adjective clandestine to describe something that is done in secret, like your clandestine attempts to steal your brother's Halloween candy. Clandestine, an adjective imported from Latin, describes a secret, usually illegal activity. Often these things have to do with political and spy organizations. The CIA might run a clandestine operation to infiltrate terrorist organizations.