‘Purple Robe’ is a medium sized, suckering, deciduous tree that typically grows to 30-40’ tall with an oval-upright habit. It is noted for its attractive compound leaves and pendant racemes of violet purple pea-like flowers. It is advertised as thornless, but plants with thorns are found in commerce. Pinnate bronze-green leaves, with each leaf having up to 23 lance-shaped to ovate leaflets, are attractive during the growing season.
Common Name: black locust  
Type: Tree
Family: Fabaceae
Zone: 4 to 8
Height: 30.00 to 40.00 feet
Spread: 20.00 to 30.00 feet
Bloom Time: May
Bloom Description: Violet purple
Sun: Full sun
Water: Dry to medium
Maintenance: Medium
Suggested Use: Street Tree, Flowering Tree, Naturalize
Flower: Showy, Fragrant
Fruit: Showy
Other: Thorns
Tolerate: Deer, Drought, Clay Soil