Pruning guide
How to prune siberian larkspur
More siberian larkspur care
Pruning siberian larkspur — FAQ
When should I prune siberian larkspur?
Deadhead promptly after first bloom in early summer; cut to ground in late summer. Remove spent flower stems by cutting back to a lateral bud or leaf. After the second flush or when foliage declines, cut all growth to the base. Leave a few spikes to set seed if you want self-sown replacements.
How often does siberian larkspur need pruning?
Deadhead through summer; annual cutback in late summer. Siberian larkspur is a shorter-lived perennial that benefits from deadheading to extend its season and prevent excessive self-seeding. Cut spent spikes back to lateral shoots for a second flush. Cut all growth to the ground once foliage yellows. Allowing some seed to set helps it naturalise if you want it to persist.
How do you prune siberian larkspur?
Remove spent flower stems by cutting back to a lateral bud or leaf. After the second flush or when foliage declines, cut all growth to the base. Leave a few spikes to set seed if you want self-sown replacements.