SelecTree: Tree Detail
Robinia × ambigua 'Decaisneana'
Photo Locations: The National Arboretum - Washington, DC and Washington Park Arboretum - Seattle, WA
Has pale pink flowers.
Erect or Spreading with a High Canopy.
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.
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.
Cite this tree:
SelecTree. "Robinia × ambigua 'Decaisneana' Tree Record." 1995-2018. Jan 22, 2018.
< http://selectree.calpoly.edu/tree-detail/robinia-×-ambigua-decaisneana >