How to Propagate commonName:"alternate-leaved butterfly bush 'Argentea'"?
Propagate by hardwood cuttings in autumn, or by semi-hardwood cuttings in summer

commonName:"alternate-leaved butterfly bush 'Argentea'" · Buddleja alternifolia 'Argentea'
Grow in well-drained soil in full sun. See buddleja cultivation for more detailed advice
Propagate by hardwood cuttings in autumn, or by semi-hardwood cuttings in summer