High nitrogen formula is good for overall size and green leaves. The landscape or container application makes it a versatile tablet. The 2-year formula is time saving and money saving; you don't have to put them in very often, and you are not limited to when you can put them in like you would a 3 or 4 month formula, because of the variety of plants that feed from these tablets, you will not have to buy many different formulas for each plant you sell or grow.