What is the recommended cutting height for grass?

Mowing grass when it reaches 1.5 times its normal height is generally recommended because it promotes healthy growth and helps maintain a robust lawn. Cutting at this height ensures that the grass can photosynthesize effectively, as well as maintain root health. Grass that is allowed to grow to this height can also develop deeper root systems, which enhances drought tolerance and overall resilience.

If mowing occurs too early, when the grass is at its minimum height, it can weaken the grass and reduce its ability to recover. Waiting until the grass starts to flower indicates that it is reaching a reproductive stage, which can also stress the plant and weaken the turf. Mowing when grass is twice its normal height might lead to scalping, which can harm the grass's health and create uneven surfaces. Thus, maintaining the grass at a height of 1.5 times its normal height strikes a balance between aesthetics and the health of the grass.