Basic mowing recommendations include frequent mowing at the tallest height recommended for the specific turf and use. Irrigating turfgrasses is also important. Over-watered turf may grow too rapidly, develop shallow root systems, and be prone to invasions of weeds, insects, and diseases. Under-irrigated turf may become open and sparse, develop a poor appearance, and also allow weed invasions. Under most circumstances, when watering, water infrequently and deeply to the depth of the root system.
Fertilizers maintain turfgrass density, vigor, and color.
Inadequate nitrogen fertilization leads to open turf that is readily invaded by weeds. Inadequate amounts of other minerals in the soil, especially potassium, phosphorus, iron, and sulfur, can also reduce turf color, disease resistance, and stress tolerance. Conduct soil tests and supply these elements as recommended by test results. It is important, however, not to supply excessive amounts of phosphorus to established turf. Excessive amounts of phosphorus at the soil surface can encourage development of germinating weed seeds.