Quick-release fertilizers should be reapplied after 4 to 6 weeks. Slow-release fertilizers, on the other hand, can be reapplied after 6 to 8 weeks; to compensate, you can feed your lawn more nitrogen, which won't harm your lawn as long as it's in a slow-release fertilizer.

Iron Turns It Blue-Green Iron helps in the production of chlorophyll and nutrient and oxygen transport throughout the plant but for you and me, looking for the visuals, it pushes a deeper, darker blue-green color. Milorganite has higher iron content compared to most fertilizers on the shelf.

12-12-12 Fertilizer In addition, nitrogen is an amazing nutrient for making grass greener, so you can get an ultra-green lawn very quickly with this fertilizer. However, keep in mind that this blend doesn't work in drought-like conditions.