How to Prune long-stamened barrenwort?
No pruning required but any faded older foliage can be cut back in early spring before fresh foliage emerges.

long-stamened barrenwort · Epimedium dolichostemon
Grow in a moist but free draining soil in shade or partial shade. Plants benefit from soils improved with well rotted leaf mould or compost.
No pruning required but any faded older foliage can be cut back in early spring before fresh foliage emerges.