The answer to 'how to care for grass' is to follow a regular maintenance routine that includes mowing, watering, fertilizing, and aerating. Proper grass care will keep your lawn healthy, green, and free of weeds.
Start by mowing your grass to the recommended height for your grass type, typically 3-4 inches. Mow regularly, removing no more than 1/3 of the blade height at a time. Water your lawn deeply 1-2 times per week, applying about 1 inch of water. Fertilize 2-4 times per year with a balanced, slow-release fertilizer. Finally, aerate your lawn annually in the fall to allow water, air, and nutrients to reach the roots.