The wild black cherry is an ornamental bush, imported from America. It can reach tree heights. At the beginning of the 20th century, a bush variety was planted in the Netherlands on a large scale as undergrowth in production forests. It developed extremely rapidly at the cost of indigenous forest plants and became such a plague that foresters gave it the nickname 'forest pest'. Combatting the forest pest has turned out to be endless work. Remnants of the plant remaining in the ground simply reroot. And the very tasty cherries are carried over distances by both birds and mammals.