Scotts Osmocote uses advanced prill technology that ensures even and controlled nutrient release with no wastage. Controlled release means feeding less often and more effectively; less frequent feeding is more economical and environment-friendly. Wetting agent improves water absorption into the soil or potting mix and helps plants take up nutrients. Boosted iron keeps leaves greener for longer.
The release of nutrients depends on temperature - more when it's warm and plants are growing and less when it's cold and growth is slow.