Morus alba or mulberry is a large, medium-sized, deciduous shrub or tree, native to Asia, but also widespread in Europe and North America, since the leaves were used as a food for silkworms. It can reach 10-12 meters in height, often maintaining the appearance of a large rounded shrub, elongated, with disordered crown. The mulberry leaves are cordate, pointed, dark green in color, generally on the same specimen there are also some trefoil or five-lobed leaves; the stem is erect, but often every single plant develops several parallel trunks, with grayish bark. The flowers are hermaphrodite or male and female, on the same specimen or on different trees; they bloom in late spring and the female flowers are followed by large juicy berries, white or purple, edible, with a sweet taste. These fruits are used in the kitchen, especially for preparing preserves or jams, they have no commercial value since, being very soft, the transportation and sale of the raw product are impractical. There are particularly appreciated varieties because they produce male and female flowers on different plants, male specimens are therefore used as garden plants, since they do not have the "inconvenience" of the fruits, which can ruin pavements and paving stones. M. nigra is very similar, but with smaller leaves, and large fruits, black in color when ripe.
As regards the best exposure, place the morus alba in a sunny or semi-shady position; mulberries are very resistant to cold and wind, as well as to atmospheric pollution, a characteristic that makes them very suitable for road trees; at one time they were very present in the Po valley along the canals.
These plants are rustic and resistant and can also be planted in places that are not ideal for them, given their great adaptability.