When to Divide Calamagrostis?

Divide cool season grasses in spring or early fall. Cool season grasses are actively growing in spring and fall. These grasses can be transplanted at either time of the year but early spring is probably the best time to divide.

When can you split ornamental grasses?

Divide warm season grasses anytime spring through mid-summer. All ornamental grasses should be divided when they are actively growing but not while they are flowering. If the plants are dormant when they are transplanted they won't establish a good root system.

Can you divide Calamagrostis?

Suitable for... 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.