Alnus Cordata - Alder tree - Height 280-300cm - 30lt

Alnus cordata, commonly known as the Italian alder, is a medium to large deciduous tree native to southern Italy and parts of Corsica. It belongs to the Betulaceae family and is highly valued for its ability to thrive in poor soils and challenging environmental conditions. This species is often planted for ornamental purposes, soil improvement, and as a windbreak due to its robust growth and adaptability.

The tree can reach heights of up to 25-30 metres (82-98 feet) with a trunk diameter of about 1 metre (3.3 feet). It has a relatively narrow, conical crown, which makes it an attractive choice for landscaping in urban and rural environments. The bark is smooth and greyish-brown when young, developing shallow fissures with age.

Alnus cordata is noted for its distinctive heart-shaped (cordate) leaves, which are bright green and glossy, measuring 7-12 cm in length. Unlike some other alders, the leaves of A. cordata remain on the tree until late autumn, giving it an extended season of greenery. In spring, it produces small, inconspicuous catkins, with male catkins being pendulous and yellowish, and female catkins more compact and upright. These develop into small, woody cones that persist on the tree through winter.

One of the key characteristics of Alnus cordata is its nitrogen-fixing ability. Like other alders, it forms a symbiotic relationship with the bacterium Frankia, which allows it to fix atmospheric nitrogen into the soil. This quality makes it an excellent species for improving soil fertility, particularly in degraded or nutrient-poor areas.

Overall, the Italian alder is a resilient and versatile tree, well-suited to a variety of landscapes, including wet or compacted soils, and is an important species for ecological restoration projects.