The fastest way to grow grass is to lay down sod, which yields an instant lawn at a hefty price. Laying down sod still requires maintenance, but you’ll spend less time overall watering than you would with traditional seeding or even hydroseeding.
Hydroseeding is the next fastest solution but is still more expensive than traditional seeding. This process involves spraying a mixture of grass seed, water, fertilizer, and mulch over the area you want to be seeded. Although the aftercare is just as time-intensive, the application process is significantly faster than conventional seeding. Hydroseeding yields more immediate results, with germination taking place in as little as seven days in many cases.
If you opt for traditional seeding, it’s best to complete a soil test and then add fertilizer and amendments accordingly. Lay down your seed evenly, cover with peat moss or another topdressing, and then water three to four times a day for about 10 minutes each time for a week or two. Drop to one to two times a day until the grass is about three to four inches tall.