Common Ragwort

Irish name:Buachalán buí
Scientific name:Jacobaea vulgaris (Senecio jacobaea)
Family Group:Asteraceae

Abundant in grasslands, neglected areas, roadsides, and dunes. Flowering time: June-October. Biennial. Native.

Identification

The plant bears bright yellow flower heads arranged densely in corymbs, each adorned with numerous ray florets. Its basal and stem leaves are deeply pinnate with toothed segments and leafy stems. It can be either hairless or slightly woolly. While the fresh plant contains poisonous alkaloids avoided by grazing animals, it serves as a significant food source for caterpillars of the Cinnabar Moth. It typically grows to heights ranging from 30 to 140cm.

More information at https://www.irishwildflowers.ie/pages/128a.html