: Produces trumpet-shaped, bright yellow blossoms that can reach up to 5 inches (12.5 cm) in diameter. Some varieties, like 'Hendersonii', feature reddish-brown buds.
: Hardy in USDA Zones 10–11 . It is sensitive to frost and should be brought indoors or into a greenhouse if temperatures drop below 60°F (15°C). Propagation and Maintenance allamanda cathartica
To thrive, Allamanda cathartica requires conditions that mimic its native tropical habitat: : Produces trumpet-shaped, bright yellow blossoms that can
Golden Trumpet, Allamanda cathartica - Wisconsin Horticulture : Produces trumpet-shaped
: Needs at least 6 hours of direct sunlight daily for maximum blooming. Soil : Prefers rich, well-draining, slightly acidic soil.