SelecTree: Tree Detail
Robinia × ambigua
Photo Locations: Los Gatos, CA
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.
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.
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.
Cite this tree:
SelecTree. "Robinia × ambigua Tree Record." 1995-2019. Mar 19, 2019.
< https://selectree.calpoly.edu/tree-detail/robinia-×-ambigua >
SelecTree Nursery Connection Map
Cal Poly / ESRI