Scientific NameSenecio vulgaris
Other Common Names:
This erect winter annual flowers from April through October. Depending on climate, it may also act as a summer annual, or a biennial. 3 to 4 generations may develop during one growing season.
The alternately arranged leaves have deeply lobed margins, and are irregularly tooted. Leaves may be sparsely hairy, although most are hairless. The upper leaves are directly attached to the stem while the lower leaves have a short petiole.
This plant contains pyrrolizidine alkaloids which are harmful to horses, cattle, swine, and even humans, causing liver damage and possibly, death. Smaller herbivores such as rabbits and goats are resistant to the plant's effects.
Flower Seed Head
The yellow flowers occur in clusters in the ends of stems. Each disk-shaped flower can grow up to 1 cm in diameter.
Seeds develop in reddish brown to gray-brown achenes. The achenes have soft white hairs, and when in clusters, form puff balls like that of the Dandelion, easing dispersion by wind.
This weed can be found in moist nutrient rich areas, such as lawns and flowerbeds.
upright and nonwoody
Thorns or Spines
Approximate Flower Diameter
Dominant Flower Color
Stem Cross Section
round or oval