Understanding Osmocote longevities

Unlike conventional fertilizers that dissolve in the soil immediately after application, Osmocote’s controlled release technology contributes to a more environmentally friendly and sustainable way of fertilization by lowerering fertilizer input and minimizing leaching.

Factors such as salinity, soil pH, microbial activity, water quality, and rain do not influence the controlled release action of Osmocote. The only factor that controls the nutrient release is temperature, while the specific fertilizer ingredients and thickness of the coating determine the longevity. The pre-defined product longevities are applicable at an average daily temperature of 70°. Higher temperatures speed up the nutrient release and shorten the longevity. Lower temperatures slow down the release of nutrients, thus extending the longevity.

The color coding and logo on the product packaging indicates the longevity by month, ensuring you always have the fertilizer with the correct longevity to add to your substrate. Osmocote fertilizers are available in seven different longevities, so there’s one ideally suited to for every growing environment and plant. Your local ICL specialist can help you choose the one that’s right for you.