Idaho Locust (Robinia 'Idahoensis')

General Plant Information (Edit)
Plant Habit: Tree
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Dry Mesic
Soil pH Preferences: Moderately acid (5.6 – 6.0)
Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Slightly alkaline (7.4 – 7.8)
Moderately alkaline (7.9 – 8.4)
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 10b
Plant Height: 25 to 40 feet
Plant Spread: 18 to 20 feet
Leaves: Deciduous
Fruit: Other: 1 to 3 inch dry, bean-like pod
Fruiting Time: Late summer or early fall
Fall
Flowers: Showy
Fragrant
Flower Color: Pink
Purple
Other: Magenta-rose to purplish-pink.
Bloom Size: 1"-2"
Flower Time: Spring
Late spring or early summer
Suitable Locations: Street Tree
Xeriscapic
Wildlife Attractant: Bees
Birds
Resistances: Drought tolerant
Miscellaneous: Tolerates poor soil
Monoecious

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