#179 most planted
Alnus cordata
Italian alder · also Alder of Corsica, Hartbladige els
SpreadingDeciduous
10,037
trees mapped
0.10%
of all named trees
9
cities
5.5 in
median trunk (14 cm, 6,144 measured)
36 yr
median age (33% have a planting date)
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Alnus cordata is a handsome deciduous tree with wide-spreading branches and a heavy, shade-providing canopy. Its leathery, heart-shaped leaves have serrated margins and turn an attractive shade of yellow in fall. This fast-growing tree is often a pioneer species of disturbed sites, not picky about soil, and improves soil fertility by fixing nitrogen.
Where it grows
Trees in each city's inventory, with the share of that city's named trees this species accounts for.
- 6,1850.54%—4.3 in
- 2,1450.76%37 yr16 in
- 1,1180.24%36 yr9.0 in
- 4520.20%—7.9 in
- 620.01%27 yr11 in
- 470.10%6.8 yr—
- 200.01%—10 in
- 70.01%—3.8 in
- 10.01%—22 in
Traits
- Form
- Spreading
- Foliage
- Deciduous
- Mature height
- 40–50 ft
- Canopy spread
- 25 ft
- Growth rate
- Fast
- Wildlife value
- High
- Blooms
- Mar, Apr, May
Trunk diameters across every city: median 5.5 in, mean 7.0 in, 90th percentile 17 in. Measured at breast height, as published by each inventory.
Other Alnus in the catalogue
18 of the top 2,000 species are in this genus.
