Hydromulching or hydroseeding is used to seed grass on residential lots, commercial job sites, highways, golf courses and areas too large, inaccessible or unsuitable for conventional methods.  Starting a lawn by hydroseeding is considerably cheaper than laying turf or sod and quicker than using seed.  It is also used to spread mixtures of wildflower and tree or shrub seeds or turf grasses for erosion control.  The process is called sprigging (or hydro-sprigging) when the slurry contains stolons or rhizomes instead of seed.