Pieris Japonica. Pieris japonica on wn network delivers the latest videos and editable pages for news & events, including entertainment, music, sports, science and more, sign up and share your playlists. Pieris japonica is an evergreen shrub that can grow up to 4.00 metres tall. It is harvested from the wild for local use as a medicine. Pieris japonica, the japanese andromeda or japanese pieris, is a plant in the heather family, ericaceae.