Golden Trumpet, Yellow Allamanda, Brown Bud Allamanda
Allamandacathartica 'Siam Snow'

Family: Apocynaceae (a-pos-ih-NAY-see-ee)
Genus: Allamanda (al-uh-MAN-da)
Species: cathartica (kat-AR-tik-uh)
Cultivar: Siam Snow

Category
Shrubs
Tropicals and Tender Perennials
Vines and Climbers

Water Requirements
Average Water Needs; Water regularly; do not overwater

Sun Exposure
Full Sun

Foliage
Evergreen

Foliage Color

Height
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

Spacing
24-36 in. (60-90 cm)

Hardiness
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)

Where to Grow

Danger
All parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction

Bloom Color
White/Near White

Bloom Characteristics

Bloom Size

Bloom Time
Late Summer/Early Fall
Mid Fall
Late Fall/Early Winter

Other details

Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)

Patent Information
Patented

Propagation Methods
From woody stem cuttings
From semi-hardwood cuttings

Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed