Aristolochia grandiflora (Pelican Flower)


Botanical Information

FamilyAristolochiaceae
GenusAristolochia
Speciesgrandiflora
CategoryTropicals, Woody
TypeVine
OriginNorth and South America. Aristolochia grandiflora was named in 1788 by Olof Swartz (1760-1818), giving the species name grandiflora since it was at the time the largest flower seen in the new world.
Ethnobotanical Uses
Disclaimer
Extracts of the plant are used to treat snake bites in Colombia with it also being used as an antibiotic.

Details

USDA Hardiness Zone11
USDA Hardiness Ref.
Canadian Hardiness ZoneRequires cool season protection under glass
Canada Hardiness Ref.
RHS Hardiness ZoneH1c
RHS Hardiness Ref.
Temperature (°C)4 - 10
Temperature (°F)40 - 50
Height6 - 9 m
GrowthFast
Flowering PeriodMay, June, July, August

Description and Growing Information

General DescriptionThe plant is poisonous to humans and livestock. It is the food source of the tropical swallowtail butterfly.
LandscapeOrnamental.
PropagationSow seeds indoors before last frost.
CultivationGrow in full sun or partial shade in a rich, well-drained soil, watering sparingly in the winter and plentifully during the growing season.
PestsProne to attack from aphids and red spider mites.
Notable SpecimensThe University of Alberta Botanic Garden, Devon, Alberta, Canada.
HabitatLowlands, tropical forests, thickets and near streams/gullies.
Leaf DescriptionLeaves are deeply triangular cordate (heart-shapped), 10 - 20 cm in length and 8 -15 cm wide.
Flower DescriptionEnormous, solitary and trumpet-shaped flowers that smell of rotting meat as female. Attracts flies. The insects enter the flower and are forced down by the hairs lining the bloom. After bloom opens the flower enters the male stage. The flowers close at dusk.
Fruit DescriptionFruit is cylindrical, 10 - 4 cm, with flat triangular seeds.
Colour DescriptionThe flowers are blotched with yellow, purple, white, red and green. The leaves are a deep green.
Texture DescriptionThe leaves become smooth as it ages.

Photographs