How to prune idaho fescue

Early spring before new growth; deadhead after flowering in summer. Comb out dead blades by hand or cut the clump back by one-third with scissors or shears. Do not cut to the ground — leave at least 3–4 inches of growth. Remove spent flower stalks at the base to keep the clump tidy.

Annually (light tidy); deadhead as needed after flowering. Idaho fescue is a slow-growing native bunch grass that needs only modest maintenance. Cut it back lightly in early spring to clear winter-dead foliage and stimulate fresh blue-green growth. Avoid over-cutting — this species resents heavy shearing and is slower to recover than Festuca glauca. Remove dead flower stalks after bloom.

Comb out dead blades by hand or cut the clump back by one-third with scissors or shears. Do not cut to the ground — leave at least 3–4 inches of growth. Remove spent flower stalks at the base to keep the clump tidy.