Wilko 5 pack of sequestered iron and plant tonic 15g sachets contain a balanced nutrient tonic suitable for application to most plants its particularly suited to rhododendrons azaleas camellias magnolias and other lime hating shrubs roses hydrangeas currants gooseberries raspberries strawberries herbaceous perennials rock plants pot plants apple pear plum and peach trees and lawns its also ideal as a treatment for chlorosis yellowing and as a general toniccontains iron fo