Alnus cordata

Italian Alder

Betulaceae

Alder decline - Symptoms:

Small leaves, thin foliage, necrosis at the lower trunk and yellowing. Cause is unknown.

Diseases Alnus cordata

Leaf curls (Taphrina tosquinetii):

Extremely wavy leaves caused by fungi. The fungus should be controlled before an outbreak.

Canker (Nectria galligena):

Fungi that leads to the breaking off of bark. Affected twigs and branches should be removed and burned. If the trunk is affected, then an expert should be called to remove canker.

Classification Alnus cordata

Height: 8 - 25 m (26 - 82 ft)

Leaf: rounded to wide ovate, serrated

Flowers: March - April, male catkins reddish, female red

Fruit: woody and cone-like, dark brown

Branches: smooth, shiny, brown red

Bark: smooth, grayish green, lenticels

Root: shallow roots

Habitat: sun to half-shade

Soil: sandy-loamy to loamy

ph-value: acidic to alkalescent