That is why lawn fertilizers always have a high first number in the sequence, which represents higher levels of nitrogen present within the bag. This nutrient promotes strong roots and stems. Fertilizers now come in many forms, making the choices of what to use even more confusing. Granular types are applied by using a spreader or by working it into the soil. Water-soluble types, usually powdery in texture and blue in color, are meant to be dissolved in water.
Organic types are processed materials such as dried blood, bone meal and manure.
Organics have low levels of nutrients compared to the other two, but are the fertilizer of choice with organic growers. Each type of fertilizer has its advantages and disadvantages and the one you choose to use is really a matter of personal preference. Special blends have been created by the industry to make it easier for consumers to purchase exactly what they need. Flowers require higher amounts of phosphorous, so the bag will have a middle number as high as the first. Roses have special needs all their own.