Laburnum alpinum
Scotch laburnum · also Scottish laburnum, Alpine laburnum, Laburnum
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Laburnum alpinum is a deciduous tree that can also grow as a large shrub, characterized by an unkempt canopy and dense, clover-like foliage. It produces showy, pendulous clusters of sweet-smelling yellow flowers. All parts of the tree are extremely poisonous if ingested, which is an important consideration for urban planting. It performs well in poor soils and fixes nitrogen.
Where it grows
Trees in each city's inventory, with the share of that city's named trees this species accounts for.
- 130.02%—5.9 in
- 40.00%—2.4 in
- 20.00%—5.9 in
- 10.00%—8.0 in
- 10.00%—3.8 in
No city in this list records planting dates for this species, so age is blank throughout.
Traits
- Foliage
- Deciduous
- Mature height
- 30–40 ft
- Canopy spread
- 20–25 ft
- Growth rate
- Moderate
- Water needs
- Moderate
- Drought tolerance
- Moderate
- Wildlife value
- Moderate
- Blooms
- Mar, Apr, May, Jun, Jul, Aug
Trunk diameters across every city: median 5.9 in, mean 5.1 in, 90th percentile 5.9 in. Measured at breast height, as published by each inventory.
Native range
Terrestrial ecoregions where this species is native. Trees in the dataset mostly stand well outside it.
Temperate Broadleaf & Mixed Forests
- Balkan mixed forests
- Central European mixed forests
Temperate Conifer Forests
- Alps conifer and mixed forests
Other Laburnum in the catalogue
4 of the top 2,000 species are in this genus.
