There are even more benefits to using Hydroseed for your lawn other than its price and convenience. Hydroseed mixtures can be custom-made, so you have the choice of which seeds you want in your mixture. Also, due to its seed and water infusion, more ground can be covered as well as tricker terrain over traditional seeding. The spray component also results in a more even and uniform appearance than other methods of seeding, which can sometimes be patchy.  There are some cons as well. At the early stages when the slurry is first getting settled in, an intensive water regime is required. Also, Hydroseed has been shown to be less effective than traditional seeding practices if you do it on your own instead of using a professional company.