Osmocote longevities

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Osmocote fertilizers are available in different longevities: 3-4, 5-6, 8-9, 12-14 and 16-18 months. So there is an Osmocote for every situation and every crop.
The colour coding on the packaging indicates the longevity. Osmocote Exact and Osmocote Exact DCT products also contain colour tracers for easy recognition. This ensures you always add the fertilizer with the correct longevity to your substrate!

The fertilizer ingredients and the thickness of the coating determine the longevity. The longevities in turn apply to an average temperature of 21°C. Higher temperatures accelerate the nutrient release, while lower temperatures slow it down. 

  Average temperature influence on longevity  
16°C 21°C 26°C
6-7 months 5-6 months 4-5 months


Other factors such as salt levels, pH of the substrate, microbial activity, water quality and rainfall do not influence the nutrient release, making Osmocote the most reliable coated fertilizer.