Rowan (Sorbus sp.) is a genus consisting of about eighty species that are found in the temperate regions of the Northern hemisphere. They take on many different shapes and sizes, from dwarf shrubs to trees of great dimension. Nearly all of them have white flowers, but the main attraction of rowans are their berries that, depending on the species, may be white, yellow, orange or red. Another characteristic is the yellow-red autumn colour of the leaves.