How to Propagate willow 'Mark Postill'?
Propagate by softwood cuttings in early summer or hardwood cuttings in winter

willow 'Mark Postill' · Salix 'Mark Postill'
Grow in a moderately fertile, moist but well-drained soil in full sun or part shade
Propagate by softwood cuttings in early summer or hardwood cuttings in winter