SelecTree: Tree Detail

PINK LOCUST
Robinia × ambigua 'Decaisneana'

Robinia × ambigua 'Decaisneana' Robinia × ambigua 'Decaisneana' Robinia × ambigua 'Decaisneana' Robinia × ambigua 'Decaisneana' Robinia × ambigua 'Decaisneana' Robinia × ambigua 'Decaisneana' Robinia × ambigua 'Decaisneana' Robinia × ambigua 'Decaisneana' Robinia × ambigua 'Decaisneana' Robinia × ambigua 'Decaisneana' Robinia × ambigua 'Decaisneana'

Photo Locations: The National Arboretum - Washington, DC and Washington Park Arboretum - Seattle, WA

General Notes

Has pale pink flowers.

Family: Fabaceae

Tree Characteristics

Erect or Spreading with a High Canopy.

Oval Shape.

Has Deciduous foliage.

Height: 40 - 50 feet.

Width: 20 feet.

Growth Rate: 36 Inches per Year.

Longevity 50 to 150 years.

Leaves Pinnately Compound Odd, Medium to Dark Green, Gold, Deciduous.

Flowers Showy. Pink. Flowers in Spring or Summer. Has perfect flowers (male and female parts in each flower).

Brown Pod, Large (1.50 - 3.00 inches), fruiting in Summer or Fall.

Bark Light Green, Furrowed or Ridged.

Shading Capacity Rated as Moderately Low in Leaf.

Shading Capacity Rated as Moderate out of Leaf.

Litter Issue is Dry Fruit and Twigs.

Tree Site Conditions & Constraints

Sunset Zones 1 - 24.

Exposure Full Sun to Partial Shade.

Moist to Dry Soil.

Drought tolerant.

Clay, Loam or Sand Texture.

Highly Acidic to Highly Alkaline Soil pH.

Seaside Tolerance is Good in Mild Zone.

Pests & Disease Information

Susceptible to Aphids, Fusarium, Oak Root Rot and Root Rot.

Health, Safety & Environmental Concerns

Branch Strength Rated as Medium Weak

Root Damage Potential Rated as High.

None Known Health Hazard.

Attracts Birds.

Cite this tree:
SelecTree. "Robinia × ambigua 'Decaisneana' Tree Record." 1995-2018. Jan 22, 2018.
< http://selectree.calpoly.edu/tree-detail/robinia-×-ambigua-decaisneana >

This tree is not part of the SelecTree Nursery Connection. If you would like to see this tree listed, or know of a nursery that sells it, please contact us at ufei@calpoly.edu.