A newly planted lawn must be at least how many inches tall before it can dry out between watering?

For newly planted lawns, achieving a height of at least 2 inches is important before allowing them to dry out between watering. At this height, the grass has developed enough root systems to access moisture and nutrients from the soil effectively. Taller grass can withstand dry spells better, as it will have deepened roots capable of reaching more water, but initially, the young grass plants require consistent moisture to establish themselves.

Once the grass reaches the 2-inch mark, it signifies that the plants are beginning to grow and can handle brief periods of drying out without suffering from stress. Allowing the lawn to dry out at this stage encourages the roots to grow deeper in search of moisture, contributing to a healthier, more resilient lawn in the long term. Taller heights, as suggested by some other options, are beneficial for established lawns but may not be necessary for very young, newly planted grass.