High quality Slow Release Fertilizer made in Germany. 330gm bag will supply all the nutrient needs of a potted plant for 12mths for 3 x 20ltr Bonsai Bags. After potting tree into Coir Potting media, apply at rate of 6gms per ltr of potting media. Best just scratched into top of pot.Plantacote pluss is a coated controlled release fertiliser which, in addition to nitrogen, phosphorus and potassium, contains magnesium and trace elements in every granule. This ensures an even supply of major nutrients and trace elements over the desired release time. The high iron content of Plantacote pluss is crucial to good performance. Iron is essential for the formation of chlorophyll and is therefore vital for good foliage colour and healthy growth. To ensure high availability, 50% of the iron in Plantacote pluss is chelated as Fe-EDTA. The nutrients of Plantacote pluss a re released by a natural membrane process which is controlled by soil temperature. Declared release times refer to an average soil temperature of 210C. Higher temperatures accelerate the nutrient release, lower temperatures slow it down. The release time is unaffected by substrata type, pH, micro organisms or level of irrigation. Plantacote pluss starts to release after 2 - 3 weeks. Due to this specific mechanism the product is very safe to crops; there is no risk of salt stress, even after storage of premixed growing media for up to 2 - 3 weeks.