Plant Profile: Sonchus asper

Sonchus asper, commonly known as Prickly Sowthistle, is a wildflower that typically blooms in spring or summer. This herbaceous annual features spiny leaves and vibrant yellow flowers, and it is often regarded as a weed due to its vigorous growth. Prickly Sowthistle thrives in full sunlight and can adapt to a range of moisture levels and soil types, including loamy, clay-loamy, and shallow gravel soils. You can frequently find it in lawns, abandoned areas, and along roadsides. The plant's size can vary significantly based on soil moisture and fertility, and it has the ability to rapidly grow and produce flower heads during the summer months. In garden environments, it is crucial to prevent this plant from seeding, as its seeds can disperse through wind and water, leading to its dominance in the area.

This resilient plant is not sensitive to frost and typically flowers between June and August, with its seeds maturing from July to September.