Dividing perennials is for the most part quite easy and benefits the health of the plant. There are just few steps you must follow to divide the grass successfully. I like to to divide the grasses in early spring before they have started to grow. You should be sure they are moist, not wet. 1. Dig up the grass plant. Gently use a shovel to dig around the perimeter of the plant. Angle the shovel towards the bottom of the grass as you dig trying to lift it as you ...