Sterilised bonemeal is a tried and trusted organic fertiliser that provides both phosphates and nitrogen, two nutrients essential for healthy growth.Nutrients are releases slowly and steadily, making Vitax Bonemeal an ideal fertiliser for bulbs and herbaceous plants, shrubs, roses, fruit trees and strawberries.It can be applied prior to sowing or planting and can be used as a top dressing for roses and fruit trees throughout the season.