Strawberry growers at Huaura Valley in Peru use to side-dress strawberries twice. The last one occurs two-three months before harvest initiation. No base fertilization is practiced. A third side-dressing of NPKMgZn was applied at three different locations at Huaura Valley 11-12 days before harvest started. This additional side-dressing increased yields: increasing daily harvest in a longer period than usual. Yield increases ranged from 14 to 43% among the three locations. The lowest yield obtained with the current fertilization was 40.1 t ha-1 and the highest yield with an extra side-dressing fertilization was 71.6 t ha-1. A third side-dressing fertilization is a good option to increase yield and therefore profitability for strawberry growers at Huaura Valley.