Controlled release fertilisers are specifically designed to release nutrients over a designated time period under NZ conditions and are widely used through the nursery industry. This six-month release product has a NPK rating of 13:4.8:9.1 and also contains essential trace elements. The granule size is 3 mm, is easy to dispense, and is a complete fertiliser solution that is both easy to use and provides certainty that your plants are being fed.