Italian alder (Alnus cordata)

Italian alder

Native to Corsica, italian alder has been introduced and naturalized in many other countries. This tree prefers dry soils and will grow rapidly even in poor conditions. Italian alder is a nitrogen fixer and can improve soil health where it is planted.

Scientific classification

Species

Italian alder (Alnus cordata)

Beeches, walnuts, and allied trees

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Perennial

Lifespan

Tree

Plant Type

Early spring, Winter

Bloom Time

Green

Leaf Color

1.5 cm to 2 cm

Flower Size

Brown

Fruit Color

Yellow

Flower Color

Green

Stem Color

Deciduous

Leaf type

5 - 32 ℃

Ideal Temperature

Images of Italian alder

Distribution of Italian alder

Distribution Map

Italian alder, native to the southern European region, thrives in its natural Mediterranean habitats. It has been introduced and cultivated in parts of central and western Europe, amplifying its presence beyond its original range. This hardy species has adapted well to these new areas, finding a favorable environment for growth.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Open areas in hill and montane forests

Care Guide for Italian alder

Every 2 weeks

Water

Full sun

Sunlight

5 - 32 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Italian alder prefers moist environments, thriving with consistent moisture while tolerating brief dryness. Water every two weeks to maintain hydration without over-saturation. Naturally occurring rainfall aids outdoor growth, requiring well-draining yet water-retentive soil for optimal health.

Fertilize: For optimal health, italian alder requires balanced, high-nitrogen fertilizers applied semi-annually. Avoid over-fertilization to prevent excessive foliage. Follow manufacturer dosage guidelines, and monitor soil pH for optimal nutrient uptake. This regimen promotes italian alder's vigor and longevity.

Pruning: Italian alder is a fast-growing tree that benefits from early spring pruning, which includes removing dead or crossing branches to promote growth. Thinning improves light and air circulation. Clean tools are essential to prevent disease, and restricting major cuts minimizes sap bleeding.

Propagation: Italian alder is a resilient deciduous tree that propagates successfully through seed sowing, requiring stratification and gentle scarification for improved germination. Seeds should be planted in well-draining, fertile soil kept moist, with cold frames recommended for protecting seedlings during early growth for stronger establishment.

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