How to Prune guelder rose?
Usually little pruning is needed. Lightly shape if necessary, removing dead, damaged or diseased shoots. Prune after flowering.

guelder rose · Viburnum opulus
Also known as: crampbark; cranberry; dog eller; dog rowan; European cranberry bush; European cranberry tree; gatten; marsh alder; ople tree; red elder; rose elder; snowball tree; water elder; whitten tree; gatten tree
Suitable for shrub border or woodland garen. Grow in any moist but well-drained soil
Usually little pruning is needed. Lightly shape if necessary, removing dead, damaged or diseased shoots. Prune after flowering.