The best time to trim monkey grass is in early spring, just after the last frost of the season has occurred. To ensure healthy growth, trim off any brown or dead foliage, leaving one inch of foliage above the soil line.
It is important to avoid cutting too far down into the crown of the grass, as this can stunt its growth. Additionally, if the grass looks overcrowded, thin out the patch by 30%. This will help the grass stay healthy and receive maximum sunlight.