How to Prune Iberian comfrey?
Can be cut back after flowering to encourage neat, young foliage

Iberian comfrey · Symphytum ibiricum
Grow in moderately fertile, moist soil in sun or partial shade. Be aware the plant growth can be vigorous once established and has the potential to become a nuisance, so may require appropriate management
Can be cut back after flowering to encourage neat, young foliage