Family: Apocynaceae (a-pos-ih-NAY-see-ee) (Info)
Genus: Allamanda (al-uh-MAN-duh) (Info)
Species: cathartica (kat-AR-tik-uh) (Info)
Cultivar: Williamsii
 One vendor has this plant for sale.
Category:
Vines and Climbers
Height:
4-6 ft. (1.2-1.8 m)
Spacing:
Unknown - Tell us
Hardiness:
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:
All parts of plant are poisonous if ingested
Bloom Color:
Bright Yellow
Bloom Time:
Mid Summer
Late Summer/Early Fall
Foliage:
Evergreen
Aromatic
Other details:
Requires consistently moist soil; do not let dry out between waterings
Soil pH requirements:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
Patent Information:
Unknown - Tell us
Propagation Methods:
From softwood cuttings
From hardwood cuttings
Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
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