#317 most planted
Alnus x spaethii
Spaeth alder · also Hybrid alder
Deciduous
3,769
trees mapped
0.04%
of all named trees
8
cities
5.5 in
median trunk (14 cm, 1,983 measured)
22 yr
median age (92% have a planting date)
Report an issue with this species
Alnus x spaethii is an artificial hybrid alder. Like its parent species, it is deciduous and likely provides some value to birds.
Where it grows
Trees in each city's inventory, with the share of that city's named trees this species accounts for.
- 2,2820.80%31 yr9.8 in
- 9070.21%4.8 yr2.8 in
- 3190.65%6.8 yr—
- 2170.10%—3.1 in
- 280.18%28 yr10 in
- 100.00%2.3 yr2.0 in
- 50.00%3.0 yr2.0 in
- 10.01%—2.0 in
Traits
- Foliage
- Deciduous
- Wildlife value
- Moderate
- Blooms
- Mar, Apr, May
Trunk diameters across every city: median 5.5 in, mean 7.5 in, 90th percentile 16 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.
