Grass is one plant that instantly transforms the landscape, no matter where you live. Over time, however, grass will become dull in color and sparse in appearance unless you maintain it. It needs nutrients and proper care to develop a deep green color. The work is worth it, though, because you'll end up with a lawn to be proud of. Watering, mowing, fertilizing and overseeding all play a role in helping grass develop a vibrant, saturated color.
Let the sprinkler soak into the grass long enough to moisten at least 1 inch into the ground. Use your finger to determine if the watering is deep enough. Watering grass often doesn't do much good if it's too shallow. A good rule of thumb is that 1 inch of water will penetrate 1/2 inch into the soil.
Water grass in the morning for the deepest green color. Watering in the evening will keep the grass moist during the cooler nighttime temperatures, which invites pests and disease.
Fertilize your lawn with a blend that contains a lot of nitrogen. Feed northern lawns in the late summer through early fall and southern lawns in the middle of spring. Nitrogen will make the grass thick and strong, with a deep green color.
Choose a slow-release or water-insoluble blend of food. This will ensure that the nitrogen keeps feeding the lawn without you having to apply it often. Make sure most of the nitrogen is in slow-release form.
Cut your grass to a reasonable height. Mowing it too short will make it stressed and unhealthy. The best height is 2 to 3 inches as long as you do not mow more than one-third of the height at one time.
Overseed your lawn to make it thicker and greener. This involves cutting the grass as short as possible, so it's 1-inch tall. Rake the soil to remove debris and loosen up the ground.
Spread a starter fertilizer to the area, as per the label instructions. Disperse the grass seed over the existing grass with a mechanical spreader.
Water the grass seed twice a day to keep it consistently moist. It will take 10 to 14 days for it to germinate.