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Having a luscious lawn won’t take a century to grow with hydroseeding—most hydroseed lawns sprout within 7 to 14 days. Once the new grass is about 4 inches tall, which is about six weeks after the installation, it’s ready to mow. After the initial mow, keep foot traffic at a minimum for another four weeks to solidify the rooting system.

If your grass is stressed from being over-trimmed, try watering it heavily and then allowing it to recover for at least two weeks before mowing again. If you notice brown patches where the grass has died off because it’s too short, you should remove the dead grass and overseed the area. Leaving dead patches can invite weeds and other problems, so if you want a totally green lawn, getting rid of dead patches should include removing the dead sections before reseeding the area.

Spring or early fall presents ideal conditions—cooler temperatures with consistent rainfall support hydration and growth.

The amount of time it takes for grass to germinate varies depending on the grass species. Even after germination, it’s going to take a while to see grass blades start emerging from soil. Some grasses germinate quickly and emerge after several days of growth (and healthy watering). Others may take up to three weeks to show themselves. Cool-season grasses tend to take the longest to germinate at one month.