Family: Papilionaceae (pa-pil-ee-uh-NAY-see-ee) (Info)
Genus: Laburnum (la-BURN-um) (Info)
Species: x watereri
Cultivar: Sunspire
Category:
Trees
Height:
12-15 ft. (3.6-4.7 m)
Spacing:
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
Hardiness:
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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Sun Exposure:
Sun to Partial Shade
Danger:
Seed is poisonous if ingested
Bloom Color:
Bright Yellow
Bloom Time:
Mid Spring
Late Spring/Early Summer
Foliage:
Deciduous
Other details:
Average Water Needs; Water regularly; do not overwater
Soil pH requirements:
6.6 to 7.5 (neutral)
Patent Information:
Unknown - Tell us
Propagation Methods:
From softwood cuttings
From seed; direct sow after last frost
Scarify seed before sowing
Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
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