Osmocote Longevities

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 plant. 

March 16, 2022
2 mins

The color coding on the packaging indicates the longevity. Osmocote Exact and Osmocote Exact DCT products also contain color 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 longevities
6-7 Months5-6 Months4-5 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.