Growing Iris ensata (Japanese Iris)

Pronunciation: eye'riss 

Plant Japanese Iris in rich, acid soil. If your soil is alkaline, amend it with peat moss and periodically dust with sulfur formulated for soil application. Plants want ample moisture in summer but won't tolerate poorly drained soil in winter. Provide partial shade in the South. Divide after blooming or in fall every 3-4 years to prevent crowding.