How to prune nepeta sibirica 'souvenir d'andré chaudron'

After first flowering flush (mid to late summer); full cut-back in early spring. After the main flush fades, cut stems back by about half to a set of healthy leaves or lateral shoot to prompt fresh growth and repeat flowering. In early spring, cut all old stems to 5–10 cm above ground before new shoots emerge from the base.

Twice yearly: post-flowering cut-back in summer plus early spring cut-back. Nepeta sibirica 'Souvenir d'André Chaudron' is a tall, upright catmint that benefits from cutting back after its first summer flush to encourage a second flowering. Shear lightly after the first flush fades. A full cut-back to near ground level in early spring keeps the plant fresh and compact.

After the main flush fades, cut stems back by about half to a set of healthy leaves or lateral shoot to prompt fresh growth and repeat flowering. In early spring, cut all old stems to 5–10 cm above ground before new shoots emerge from the base.