Our 5 pack of Sequestered Iron and Plant Tonic 15g Sachets contain a balanced nutrient tonic suitable for application to most plants. It's 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. It's also ideal as a treatment for chlorosis (yellowing) and as a general tonic. Contains iron for strong growth and rich, green foliage plus manganese and magnesium to help prevent leaf yellowing (chlorosis).Warning:Causes skin irritation and serious eye irritation. Harmful to aquatic life with long-lasting effects. Keep out of reach of children and always read instructions before use.