General Plant Information (Edit)
Plant Habit: Tree
Life cycle: Perennial
Sun Requirements: Full Sun
Water Preferences: Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Slightly alkaline (7.4 – 7.8)
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 8b
Plant Height: 30 to 40 feet
Plant Spread: 20 to 30 feet
Leaves: Deciduous
Fruit: Showy
Flowers: Showy
Fragrant
Flower Color: Purple
Bloom Size: 1"-2"
Flower Time: Spring
Late spring or early summer
Suitable Locations: Street Tree
Xeriscapic
Uses: Flowering Tree
Will Naturalize
Dynamic Accumulator: Nitrogen fixer
Resistances: Deer Resistant
Drought tolerant
Propagation: Seeds: Will not come true from seed
Miscellaneous: Tolerates poor soil
With thorns/spines/prickles/teeth
Patent/Plant Breeders' Rights: USPP 2,454 (Expired)
Goes Dormant
Parentage: Decaisneana x Monument

Image
Common names
  • Locust
Also sold as:
  • Robinia pseudoacacia 'Purple Robe'
  • Robinia x ambigua 'Purple Robe'

Photo Gallery
Location: Ann Arbor, Michigan
Date: 2013-05-29
Robinia 'Purple Robe' - Inflorescences can be the elongated dangl
Location: Ann Arbor, Michigan
Date: 2013-05-29
Robinia 'Purple Robe' - Showing typical locust limb growth and co
Location: San Diego, CA
Date: 2010-06-13
Location: Ann Arbor, Michigan
Date: 2013-05-29
Robinia 'Purple Robe' - Recognizably locust-like in leaves and fl
Location: Ann Arbor, Michigan
Date: 2013-05-29
Robinia 'Purple Robe' - Leaflets in the compound leaves are rough
Location: In my garden, Cottage-in-the-Meadow Gardens, South Amana, IA
Date: 2007-05-18
Location: In my garden, Cottage-in-the-Meadow Gardens, South Amana, IA
Date: 2007-05-18
Plant Events from our members
aspenhill On May 5, 2017 Obtained plant
Lowes - qty 1
» Post your own event for this plant

« Add a new plant to the database

« The Plants Database Front Page

Today's site banner is by KGFerg and is called "Fruit of Mahonia oiwakensis"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.