Pruning guide
How to prune red valerian
More red valerian care
Pruning red valerian — FAQ
When should I prune red valerian?
Deadhead continuously in summer; hard cutback in midsummer after first flush. Snip off spent flowerheads as soon as petals drop, cutting back to a healthy lateral shoot. After the main flush in early summer, cut the whole plant back by 50% to encourage a second flowering wave in late summer.
How often does red valerian need pruning?
Deadhead regularly throughout summer; one hard cutback per season. Red Valerian is a prolific self-seeder and can become invasive if allowed to set seed freely. Deadheading spent flower clusters immediately after bloom prevents unwanted seedlings and often triggers a second flush of flowers. Cut the whole plant back hard by half in midsummer after the first flush fades to refresh growth.
How do you prune red valerian?
Snip off spent flowerheads as soon as petals drop, cutting back to a healthy lateral shoot. After the main flush in early summer, cut the whole plant back by 50% to encourage a second flowering wave in late summer.