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A picture of a Common Ragwort

Common Ragwort

Jacobaea vulgaris

Also known as

Ragwort, Stinking Willie, Binweed, Benweed, Boliaum, Cankerweed, Fairy's Horse, Fellon Weed, Fireweed, Keddledock, Kettledock, Ragweed, St James' Weed, St James' Wort, Saracen's Compass, Staggerwort, Starwort, Tansy Ragwort, Yellow Tops, Jacobaea

Full Sun
Moderate care
Moderate watering
Frost Hardy

7a

USDA zone

-18°C

Minimum temperature

Expected size

Height
Spread

80cm

Max

1m

30cm

Min

50cm

1 years to reach maturity

Flowering

  • spring
  • summer
  • autumn
  • winter

More images of Common Ragwort

Senecio jacobaea 071
Senecio jacobaea 20070603w
Jacobaea vulgaris-3235
Senecio ¿ chrysanthemoides ? (7760389342)

Common Ragwort Overview

Jacobaea vulgaris is a herbaceous perennial species that typically grows as a biennial. It is in the daisy family Asteraceae (Asteraceae) and historically it was known as Senecio jacobaea before it was reclassified to J. vulgaris. Considered a potent weed that is poisonous to cattle and horses, it produces interesting yellow blooms. This species is an important host species to multiple insects such as the cinnabar moth, Tyria jacobaeae. Considered a weed in many locations, this species is commonly called ragwort, amongst many other names. It is native to Eurasia and deciduous in nature, thus it loses its green foliage in the autumn and regrows new leaves in the spring. Its often found on disturbed and uncultivated land, on sites like the edges of roads or grazing land.

Common problems with Common Ragwort

How to propagate Common Ragwort

Cuttings

You can propagate the shrubs and climbers by semi-ripe cuttings in the summer.

Division

The annuals by seed in spring and the perennials by division in spring.

Seed

Special features of Common Ragwort

Attracts butterflies

Attracts useful insects

Other uses of Common Ragwort

Found on waste ground. Poisonous to horses.