Most sod contains Kentucky Bluegrass. The unique nature of Bluegrass with its interlocking root structure and ease of handling has caused most sod companies to use this in their blends. Kentucky Bluegrass is not native to this area and is virtually incompatible with native grasses. Its use in sod has created a higher maintenance (alkaline dependent) lawn. Unless requested, SprayLawn will not use Kentucky Bluegrass.
The merits of hydroseeding vs. hand seeding are basically twofold: time and quality; unless you are willing to import several cubic yards of peat moss per thousand square feet, and laboriously sift it over hand sewn seeds, roll it, and reseed for several months... hydroseeding is a most viable substitute for this method of planting. The degenerated cellular lining of peat affords it very little water retention capacity as compared to virgin wood fiber (mulch) found in a hydroseeded lawn. The watering demands for peat covered seed are at least two times as much as when hydroseeded. Virgin wood fiber mulch hydroseeding still retains its water retention cellular capacity, greatly reducing watering requirements.
It is very common for peat moss covered seed to wash out in the event of a moderate rain event. A SprawLawn hydroseeded lawn with a tactified (glue based) coagulant will not wash out. At the end of the day, a hand seeding lawn is very labor intensive using lumpy peat material, airborne fines, and inconsistent (patchy) results.
A SprayLawn yard is evenly applied with interlocking wood fibers, using an organic tactifier (glue) and is guaranteed.