How to Prune Symphytum × uplandicum 'Bocking 14'?
Cut back to the ground in autumn

Symphytum × uplandicum 'Bocking 14' · Symphytum × uplandicum 'Bocking 14'
Grow in moderately fertile, moist but free draining soil in sun or partial shade. Plants are sterile and non-invasive
Cut back to the ground in autumn