Near parks, gardens or cemeteries, the Oregon Grape or Holly-Leaved Barberry (Mahonia aquifolium) can be seen growing wild. It is not native to Europe but is originally from North America.
The shrub, which can reach a height of 2 metres, belongs to the barberry family (Berberidaceae).
Mahonia aquifolium is evergreen and can flower as early as February. The berries appear from June, but it takes until November until they are ripe. Their flesh is said to be edible, at least in small quantities. The other parts of the plant are poisonous (source).
Oregon grape grows in sunny to shady places and can be found along roadsides and in shrub borders. It is adaptable and can also cope with dry and sandy soil.