Poultry manure is the primary ingredient but this is enriched with natural potash, to supply the three major nutrients needed for abundant blooms and green leaves. It provides 100% organic, natural plant goodness.The formula means that nutrients are released to the soil over an extended period and a single application can provide all the nutrients your roses need for the whole growing season. However, for best results we suggest you apply at the start of the season with a repeat application in early June.Organic Rose Food should be mixed with the soil when planting or used as a top dressing around the base of established plants.