Urea is a naturally occurring compound that contains the element nitrogen. Nitrogen is critically essential to plant growth. In fact, urea is such an efficient carrier of nitrogen that mammals, including humans, get rid of excess nitrogen from protein metabolism by excreting it as urea.
Urea was first synthesized in 1828; now, more than 90 percent of the world’s industrially-produced urea is intended for fertilizer. Various grades of urea are also used in other consumer products such as cosmetics, colorants and cleaning products.
Urea can be applied at low doses for repeated weekly feedings or modified to provide slow-release urea over extended periods of time.
Most Miracle-Gro® and Scotts® fertilizers