The Bismarckia nobilis is an evergreen palm tree, native to Madagascar whose adult specimens can reach 15-20 m in height and 5-6 m in width. This type of palm has a short, stocky stem, which in the young specimens retains the base of the old fronds, while with the passing of the years it tends to become smooth; the fronds are up to 150-200 cm wide, fan-shaped, made up of ribbon-shaped, rigid and pointed segments; the young leaves are of a green color suffused with purple violet, while the adult fronds are of a silver blue color, covered by a thin waxy patina of a silver white color.
Each frond of this plant is supported by a long rigid petiole, up to 150-180 cm long, which bears some sharp spines on the sides. The crown of this palm is very particular in that it is perfectly rounded.
Bismarckia nobilis is cultivated in a sunny place, even if it can bear slightly shaded places; does not fear moderate cold weather, and also bears short, not too intense frosts, especially if it is a mature plant; young specimens, on the other hand, fear frost and can be ruined by winter temperatures.
Generally during the winter young plants are covered, using non-woven fabric, even if usually the ruined fronds are replaced by new fronds in spring, without the plant suffering excessive damage.
The more adult plants can easily resist temperatures that reach -3 / 4 ° C for short periods, but they are however plants that prefer a mild and temperate climate. The green leaf variety already suffers at temperatures of 0 ° C.