How to Prune rhododendron 'Halfdan Lem'?
Keep pruning to a minimum: remove dead, damaged or unwanted growth; if shaping is needed, trim lightly after flowering.

rhododendron 'Halfdan Lem' · Rhododendron 'Halfdan Lem'
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
Keep pruning to a minimum: remove dead, damaged or unwanted growth; if shaping is needed, trim lightly after flowering.