Family: Papilionaceae (pa-pil-ee-uh-NAY-see-ee) (Info)
Genus: Robinia (roh-BIN-ee-uh) (Info)
Species: x holdtii
Synonym:Robinia x coloradensis
Category:
Shrubs
Trees
Height:
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
Spacing:
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
Hardiness:
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
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)
Sun Exposure:
Full Sun
Sun to Partial Shade
Danger:
All parts of plant are poisonous if ingested
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color:
Pale Pink
Pink
Rose/Mauve
Bloom Time:
Late Spring/Early Summer
Foliage:
Deciduous
Other details:
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Drought-tolerant; suitable for xeriscaping
This plant is resistant to deer
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:
Unknown - Tell us
Propagation Methods:
From seed; stratify if sowing indoors
From seed; germinate in a damp paper towel
Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored
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