The most important nutrient in the lawn fertilization program is nitrogen.
Nitrogen helps promote green color and a thick, dense lawn.
The more nitrogen applied, the more topgrowth. Bag It program. Bag It program to apply the proper amount and kind of nitrogen and to apply it at the right times of the year to control growth. The fertilizer plan in Table 1 is designed to allow the lawn to grow at a reasonable rate and still have good color and density. Earlier date for northern Ohio and later date for southern Ohio.