when used as a nitrogen fertilizer, must be injected under the soil surface. Although water-soluble, ammonium attaches readily to clay and organic matter particles (in much the same way iron is ...

Water-soluble fertilizers are dissolved in water and ... Simply incorporate organic matter into the soil around your hibiscus ...

This organic fertilizer for St. Augustine grass has ... If the fertilizer is soluble in water, the ratio of nitrogen is usually much higher to indicate quicker results and account for runoff.