Pruning guide
How to prune scarlet bugler
More scarlet bugler care
Pruning scarlet bugler — FAQ
When should I prune scarlet bugler?
Deadhead throughout summer; cut back old stems in early spring before new growth. Remove individual spent flower spikes back to a basal leaf or side shoot. In spring, cut all old, woody stems to 2–4 inches above ground, leaving any green basal rosette growth intact.
How often does scarlet bugler need pruning?
Deadhead regularly in summer; hard cut-back once annually in early spring. Scarlet bugler (Penstemon barbatus) benefits from deadheading to encourage repeat flowering through summer. Once blooming ends, cut flower stalks back to healthy basal foliage. Leave some spent stems through winter for wildlife shelter and frost protection, then cut back to the base in early spring before new growth emerges.
How do you prune scarlet bugler?
Remove individual spent flower spikes back to a basal leaf or side shoot. In spring, cut all old, woody stems to 2–4 inches above ground, leaving any green basal rosette growth intact.