Madagascar ragwort is a small yellow daisy-like annual or short-lived herb, a weed of pastures, roadsides and disturbed ground in warm climates. It is grown only as a weed, not as an ornamental, and it is poisonous to livestock.
Family
Asteraceae (Daisy family)
Grows as
Annual
Light
Full sun
Water
Tolerates dry spells; it needs moisture mainly to establish from seed.
Soil
Almost any soil, including disturbed and poor ground.
Temperature
Subtropical and warm temperate climates; cold-sensitive, frost-killed in winter.
How easy
Easy
Safety
Toxic: Contains pyrrolizidine alkaloids that damage the liver; the whole plant is poisonous.
Native range
Zimbabwe to S. Africa, Madagascar
Climate
subtropical
About
Senecio madagascariensis, also known as Madagascar ragwort, is a species of the genus Senecio and family Asteraceae that is native to Southern Africa. Other common names include Madagascar groundsel and fireweed. It has been included on the noxious weeds list for Hawaii
and the reject list for Australia.
Safety
Senecio madagascariensis contains pyrrolizidine alkaloids and is poisonous. Horses, cattle, and other livestock are at risk.
Symptoms of poisoning from fireweed include gradual weight loss, jaundice, fluid in the lungs, blindness, sudden death without any other indications, aimless wandering, muscular coordination, twitching of the head muscles, abdominal straining, rectal prolapse, and irritability.
Where it grows
It is found in pastures, open woodlands, grasslands, suburban bushland, roadsides, disturbed sites, wastelands, parks and coastal environments in subtropical and warmer temperate regions.
Text excerpted from the Wikipedia article Senecio madagascariensis by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.