How to Prune iris 'Black Joker'?
No pruning required. Cut back faded flower stems after flowering. Remove withered leaves in autumn.

iris 'Black Joker' · Iris 'Black Joker'
Grow in reliably damp soil that is rich in organic matter in a sun or partial shade. Can be grown as a marginal plant in ponds and along streamsides.
No pruning required. Cut back faded flower stems after flowering. Remove withered leaves in autumn.