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Robinia, Idaho Locust 'Idahoensis'

Robiniax ambigua

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Robinia x ambigua by kennedyh
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Family
Fabaceae (fab-AY-see-ee)
Info
Genus
Robinia (roh-BIN-ee-uh)
Info
Synonym
Sun Exposure
Full Sun
Foliage
Grown for foliage
Deciduous
Smooth
Height
20-30 ft. (6-9 m)
30-40 ft. (9-12 m)
Spacing
20-30 ft. (6-9 m)
Hardiness
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
Danger
Seed is poisonous if ingested
Parts of plant are poisonous if ingested
Bloom Color
Rose/Mauve
Bloom Time
Late Spring/Early Summer
Other Details
Category
Trees
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color

Unknown - Tell us

Where to Grow

Unknown - Tell us

Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size

Unknown - Tell us

Other details

Unknown - Tell us

Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
From hardwood cuttings
From seed; direct sow outdoors in fall
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Seed does not store well; sow as soon as possible
Regional

This plant is said to grow outdoors in the following regions:

Golden Valley, Arizona

Morenci, Arizona

Bernice, Louisiana

Homer, Louisiana

Minden, Louisiana

Salt Lake City, Utah(2 reports)

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