Late winter or early spring
People also ask
Should you cut back ornamental grasses in the fall?
If you leave the trimming until spring try to make sure to cut them back to the ground (you can leave a couple of inches) by late spring, before new growth begins. Not all ornamental grasses look good through the winter, trim back those that don’t look good in the fall. Cut back cool-season grasses in very early spring.
When should I cut back my lawn in the spring?
Cool season grasses should be cut back in very early spring. As soon as the snow clears, cut the grass back by 2/3, leaving 1/3 in place. Pruning too drastically can harm the plant. Warm season grasses begin growing in mid to late spring, or even early summer.
How do you prune ornamental grasses?
Cut warm-season grass a few inches from the ground. Cut cool-season grass so that one-third of the plant remains. Dividing increases the amount of foliage in your yard without having to buy more ornamental grass. Doing this every few seasons helps your grasses remain active and healthy.
When should I trim my deciduous grasses?
Deciduous grasses, which turn a golden, straw brown rather than necessarily lose their leaves, need different treatment from those with are evergreen. Some deciduous species, for example Calamagrostis acutiflora ‘Karl Foerster’ and Deschampsia cespitosa ‘Goldtau’ should be trimmed to ground level before growth starts in early spring.