This specially formulated plant food is just what acid loving or lime hating plants need for healthy growth.It contains sequestered iron which is easy for ericaceous plants, like rhododendrons, azaleas and camellias, to take up even in alkaline soil. Formulated for use with acid-loving plants, this effective plant food contains sequestered iron, this is absorbed easily to aid healthy growth and prevent leaf yellowing. Use during the growing season from March to September.