How to Propagate Rhododendron 'Royal Command'?
Propagate by heeled semi-ripe cuttings in late summer, by layering in autumn, or by grafting in late winter or late summer

Rhododendron 'Royal Command' · Rhododendron 'Royal Command'
Grow in light dappled shade, in a site sheltered from cold, dry winds and late frosts, in moist but well-drained, humus-rich, acidic soil, preferably between pH4.5 and pH5.5; will also tolerate sun and dry soil; for more advice, see rhododendron cultivation
Propagate by heeled semi-ripe cuttings in late summer, by layering in autumn, or by grafting in late winter or late summer