Species: Alnus glutinosa (L.) Gaertner
Italian common noun: Ontano comune, Ontano nero
Family: Betulaceae
Natural shapesTrees DeciduosFull sunPartial shade
Climate resistance: + / -20° CClimate resistance: + / -20° C
- Legislative Decree no. 151 - Legislative Decree no. 386

Origin: Europe, West Asia, North Africa

Botanical characteristics: It is a medium size tree, it can reach 20 m in height and it has a conical and oval head. Leaves are dark green with toothed margin and obovate sheet, truncate base and bidentate or truncate top. On the underside the leaves have yellow hairs on the origin of secondary veins. It is a monoecious plant, the male and female flowers are separated. The female inflorescences are composed of 3-8 catkins, followed by ovoid infructescenses, which are 1-2 cm long. In winter, they become woody and persist on the plant. Bark is greenish-brown, shiny, with horizontal lenticels.

Agronomic and environmental characteristics: It lives throughout the Italian territory, along the river banks or peaty asphyxiating soils up to 800 meters above sea level. It prefers moist soils. It is a pioneer plant, which colonizes the banks of rivers and streams.

Use: It is used for reforestations along the water courses, for the consolidation of embankments, for hedgerows in the lowlands and for the improvement of fertility. It is recommended as an ornamental plant.

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Produzione Note Altezza Circonferenza tronco Diametro/Lato chioma Q.tà  
Vaso 9.9.13 Vaso 9.9.13
Vaso Ø 18 Vaso Ø 18
Vaso Ø 22 Vaso Ø 22
Vaso Ø 26 Vaso Ø 26
Zolla 200-250 cm
Zolla 250-300 cm
Zolla/Air-Pot/Vaso 300-350 cm
Zolla/Air-Pot/Vaso 350-400 cm
Zolla/Air-Pot/Vaso 400-450 cm
Zolla/Air-Pot/Vaso 450-500 cm
Zolla 6-8 cm
Zolla 8-10 cm
Zolla 12-14 cm
Zolla/Air-Pot/Vaso 14-16 cm
Zolla/Air-Pot/Vaso 16-18 cm
Zolla/Air-Pot/Vaso 18-20 cm
Zolla/Air-Pot/Vaso 20-25 cm
Zolla/Air-Pot/Vaso 25-30 cm
Zolla/Air-Pot/Vaso 30-35 cm