Yellow angel's trumpet is a broadleaf evergreen hybrid of B. aurea × B. versicolor native to S. Colombia to Ecuador found in the seasonally dry tropics. The parents are considered extinct in the wild. In its native habitat it can grow 20 feet tall but here it will be 5 to 10 feet tall, depending on the zone. The plant grows well in organically rich, well-drained soil, in full sun. In the spring and summer, the plant will respond to regular fertilization with new growth and flowers. The flowers are 6 to 12 inches long, fragrant and pendulous with yellow flowers that mature to white or pink. Cultivars exist with additional flower colors. Several cultivars have won the Award of Garden Merit from the Royal Horticultural Society. Yellow angel's trumpet is a tropical plant and typically grown as a container plant or houseplant, but can be placed in the landscape as a woody or herbaceous shrub in zones 8-10. Heavy flowering does not occur until the second year. During the growing season, the plant requires regular fertilization to stimulate new growth and flowers. If the plant is grown outdoors, be prepared to pot it and move it indoor in the fall Diseases, Insects, and Other Plant Problems: No significant insect or disease problems. However, it is susceptible to many of the problems common to indoor plants. Watch for caterpillars, spider mites and whiteflies, particularly on overwintering plants.
Curated pairwise relationships between this plant and others in the library — who feeds
whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.
No curated interactions recorded for this species yet.
Also noted by NC State
Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell
apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.
Full sun (6 or more hours of direct sunlight a day)
Soil texture
High Organic Matter
Soil drainage
Good Drainage
NC region
Coastal; Piedmont
Mature size
Height: 5 ft. 0 in. - 10 ft. 0 in. | Width: 3 ft. 0 in. - 5 ft. 0 in.
Growth rate
Medium
Maintenance
Medium
Canopy layer
3 - Shrub (3-15 ft)
Form & Appearance
Habit / form
Erect
Texture
Medium
Foliage
Broadleaf Evergreen
Leaf color
Green
Leaf type
Simple
Leaf arrangement
Alternate
Leaf shape
Oblong; Ovate
Leaf margin
Entire
Leaf value
Showy
Leaf size
> 6 inches long, 3-6 inches wide
Hairs present
Yes
Leaf detail
Ovate to oblong leaves are up to 8 inches long
Flower color
Gold/Yellow; Pink; White
Flower value
Fragrant; Showy
Flower shape
Funnel; Trumpet
Flower size
> 6 inches
Flower detail
Yellow single flowers, pink or white when mature. Blossoms can be 6 to 12 inches long, pendent, trumpet-like or funnel-shaped, 5-lobed at tip. Emits a strong fragrance in the evening.
Bloom time
Fall; Summer
Fruit type
Capsule
Fruit detail
Spineless fruits are smooth, slender and pointed at the end
Poisonous to Humans; Problem for Cats; Problem for Children; Problem for Dogs
Resistant to
Deer
Particularly resistant to
deer resistant
Poison severity
High
Poison parts
Flowers; Leaves; Seeds
Poison symptoms
Among the most toxic of ornamental plants. Hallucinations, dry mouth, muscle weakness, increased blood pressure and pulse, fever, dilated pupils, paralysis.
Toxic principle
Tropane alkaloids
Contact dermatitis
No
Toxicity summary
High severity poison; parts: Flowers; Leaves; Seeds