SelecTree: Tree Detail

PINK-FLOWERING LOCUST
Robinia × ambigua

Robinia × ambigua Robinia × ambigua Robinia × ambigua Robinia × ambigua

Photo Locations: Los Gatos, CA

General Notes

A hybrid between Robinia pseudoacacia × Robinia Viscosa.

Has pale pink flowers. Not often planted. The bark, leaf and seeds are known to be poisonous if ingested.

Family: Fabaceae

Tree Characteristics

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. White or 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 2 - 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, Armillaria and Root Rot.

Health, Safety & Environmental Concerns

Branch Strength Rated as Medium Weak

Root Damage Potential Rated as High.

Poisonous Health Hazard.

Attracts Birds.

Cite this tree:
SelecTree. "Robinia × ambigua Tree Record." 1995-2018. Dec 9, 2018.
< https://selectree.calpoly.edu/tree-detail/robinia-×-ambigua >

SelecTree Nursery Connection Map
Cal Poly / ESRI