Learning how to divide ornamental grass is simple. Large clumps are best taken from the sides of a growing mound with a square tipped spade or shovel. You may dig the entire plant, split in half, and replant.

Can you split Carex plants?

Grasses from cool climates (such as Carex, Calamagrostis, Chasmanthium, Deschampsia, Festuca, Hakonechloa, Helictotrichon, Molinia and Stipa) require frequent division, perhaps every three years, to prevent root congestion and loss of vigour.

How do you propagate Carex?

Dig a hole that is the same depth and twice the width of your plant, spreading the roots out before settling into place. Space companion plants 30cm-1m (12-40”) apart to allow room for plants to spread as they mature. After planting, water thoroughly and deeply.