SelecTree: Tree Detail
ROBINIA PSEUDOACACIA 'PYRAMIDALIS'
Robinia pseudoacacia 'Pyramidalis'
Photo Locations: Washington Park Arboretum - Seattle, WA
A narrow, columnar tree.
Has fragrant Flower.
Erect and requires ample growing space.
Has Deciduous foliage.
Height: 50 feet.
Width: 10 feet.
Growth Rate: 36 Inches per Year.
Longevity 50 to 150 years.
Leaves Pinnately Compound Odd with Elliptic to Ovate Leaflets, Medium to Dark Green, Gold, Deciduous.
Flowers Showy. Fragrant White. Flowers in Spring or Summer. Has perfect flowers (male and female parts in each flower).
Brown Pod, Very Large (Over 3.00 inches), fruiting in Fall Wildlife use it.
Bark Dark Brown or Red Brown, Fissured.
Shading Capacity Rated as Moderate in Leaf.
Shading Capacity Rated as Low out of Leaf.
Litter Issue is Dry Fruit.
Tree Site Conditions & Constraints
Sunset Zones 2 - 24.
USDA Hardiness Zones 5 - 9.
Exposure Full Sun to Partial Shade.
Moist to Dry Soil.
Clay, Loam or Sand Texture.
Highly Acidic to Highly Alkaline Soil pH.
Salinity Tolerance is Moderate Inland.
Seaside Tolerance is Good in Mild Zone.
Pests & Disease Information
Susceptible to Aphids and Beetle Borers, Fusarium, Oak Root Rot, Phytophthora, Root Rot and Verticillium.
Health, Safety & Environmental Concerns
Branch Strength Rated as Medium Weak to Medium
Root Damage Potential Rated as High.
Allergy and Poisonous Health Hazard.
Desirable Wildlife Plant.
Wildlife use Fruit.
Cite this tree:
SelecTree. "Robinia pseudoacacia 'Pyramidalis' Tree Record." 1995-2018. Apr 23, 2018.
< https://selectree.calpoly.edu/tree-detail/robinia-pseudoacacia-pyramidalis >