Parthenocissus is part of the Vitaceae family and is a genus of about ten species of deciduous climbing plants, mostly native to China and the Himalayan Region.
Of note are the affinities of this variety with the genera of Ampelopsis and Vitis.
Like all climbers, this genus is also particularly suitable for pergolas, walls, trellises and other similar supports. When it grows wild it leans on the trunks of the nearest trees.
It must be done between November and March. Since young seedlings do not tolerate transplanting with bare roots, it is advisable to use more mature plants, which are already rooted in pots; these should be placed in the middle of a hole about 50 cm in diameter and depth, dug nearby in the vicinity of the support to which you want to have them climb.
It must be moist and made up largely of compost. The best position is sheltered from cold currents and frost, although some species adapt to living well even in more exposed positions.
Watering must be rather moderate; the Parthenocissus has no particular water requirements.
Flowering occurs from May to July. The flowers are generally small and grouped into compound tops.
The leaves are trilobed or divided into leaves and in autumn they take on very bright and vivid colors. The tendrils are also characteristic.
It can occur by cuttings or by sowing. In the first case we proceed by taking, in the period of August-September, cuttings of about 10-15 cm from semi-mature branches, or in the period between October and November cuttings of about 25-30 cm from mature branches. The cuttings will be placed in single pots, filled with sand, which will be placed in the special multiplication boxes. Once the rooting has taken place, it will be necessary to send the seedlings back into larger diameter pots, filled with soil. Multiplication by sowing must take place between October and November; the seeds will be planted in special trays, filled with seed compote and placed in the containers for reproduction. Once the first leaves are checked, the plants will be ready for repotting in containers about 7 cm in diameter.
Pruning should be practiced. In the summer, in order to lighten and thin out the branches that are too thick.
Parthenocissus: The main varieties
Parthenocissus quinquefolia: rustic and climbing variety, commonly called Canadian vine. Originally from North America, P. quinquefolia is characterized by toothed leaves and grouped in small strands of 3-4 leaves for the very small flowers that bloom in late spring and which give way to gray-blue berries. It can even reach a height of about 20 meters.
Parthenocissus tricuspidata or American vine: a rustic climbing species from Japan and China. Its leaves are trilobed, its flowers are yellow and bloom in early summer; the fruits, which are small and blue, grow abundantly until September.
Himalayan Parthenocissus: as its name suggests, this is a semirustic and climbing variety, native to the Himalayan region. It prefers sheltered positions and is capable of reaching up to 10 meters in height; the leaves are trifoliate, the flowers yellow-green, the fruits small and blue.
Parthenocissus inserta: originating from North America, it can reach a height of 20 meters. Rustic and creeping variety, which grows very fast especially along the walls, thanks to the tendrils it is equipped with that allow it to adhere to and "hook" to every grip, even the most imperceptible. Its flowers are white and are grouped in peaks; its leaves take on bright colors between red and orange during the autumn period.
Parthenocissus thompsonii: creeper with woody stems, deciduous leaves and tendrils. It can even reach a height of 10 m. The leaves take on particular colors in partial shade. Produces black berries.