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Ragwort Wikimedia Commons
Asteraceae

Ragwort

Jacobaea vulgaris

Tenacity and the fine line between weed and wildflower.

Family
Asteraceae
Genus
Jacobaea
Native to
Europe, northern Asia
Bloom season
Summer, Early Autumn
Type
biennial or short-lived perennial
Height
30–100 cm
Sunlight
full sun
Soil
dry to medium, well-drained
Water
low to medium
Hardiness
4–8
Lifespan
biennial; sometimes short-lived perennial

Did you know

  • Ragwort is the primary food plant of the cinnabar moth caterpillar, which stores its toxins for defense.
  • It contains pyrrolizidine alkaloids that are toxic to horses and cattle, making it a regulated weed in many countries.
  • Despite its bad reputation with farmers, ragwort supports over 170 insect species in Britain alone.
  • A single plant can produce 150,000 seeds, each equipped with a parachute of fine hairs for wind dispersal.
  • The name 'ragwort' comes from the ragged appearance of its deeply lobed leaves.

Color meanings

Yellow

determination against all odds

Uses

  • wildlife habitat
  • natural dye (yellow-green)
  • ecological study