There are many ways in which organic liquid fertilizer can be considered the best option for your lawn. For instance, because the nutrients in the fertilizer are already dissolved, they get absorbed in the soil quicker and delivered to the plants more accessible. That means that your lawn will be able to absorb it and grow faster. This is great for young lawns or for getting your lawn looking its best quickly. They are also great at balancing the pH of the soil and making sure that the lawn gets just the right amount of nitrogen it needs.
On the other hand, organic lawn fertilizer tends to be a bit more expensive than different kinds of fertilizer. That means that if you have a bog lawn, it will cost you more to fertilize it using this option. That may be the preferred scenario for people trying to get the best lawns on a budget. Also, liquids tend to be more susceptible to volatilization. That means that your fertilizer may evaporate quicker than it can be absorbed in the ground. The main consequence of this can be that your plants will be left with less fertilizer to absorb, and you will have to fertilize your lawn more times than you would like to.