How to prune narrow-leaved evening primrose

Deadhead during bloom (late spring to summer); cut back after flowering; tidy in autumn. Remove spent flower stems by cutting back to a lateral shoot or basal leaf rosette. After the main flush, shear the whole plant back by half to prevent sprawl and encourage fresh foliage. Cut to ground level in late autumn.

Deadhead regularly in season; post-bloom shear; annual autumn cut-back. Narrow-Leaved Evening Primrose (sundrops) is a spreading perennial that benefits from cutting back after flowering to keep it in check. Deadhead spent blooms to prolong the display. After flowering, cut stems back by half to encourage tidy basal growth. Cut to ground in late autumn.

Remove spent flower stems by cutting back to a lateral shoot or basal leaf rosette. After the main flush, shear the whole plant back by half to prevent sprawl and encourage fresh foliage. Cut to ground level in late autumn.