Answer by
ladybud (1069)
Add nutrient's like sulpher,magnese,magnesium.Done in right dose's it will green it up to darker green color.If over done and to much is added it could lock out nitrogen causing a nutrient imbalance and brown patch's Use 1-2 tsp per gallon of water to be on safe n also sprinkle it on to the lawn then water.Just don't over do it.