Senecio vulgaris (Common Groundsel) - photos and description


Looking straight down on plant in above photo

Bracts acute with black tips.

Flower heads consist of disk flowers only

Leaf mid-stem in above photo

Leaf mid-stem in above photo.

General: A weedy annual plant with a branching, upright growth habit. The stems are angled, and are reddish at the bottom. The lower stems are sparingly hairy, with the upper stems and inflorescence have cobwebby hairs. A prolific seed producer, this weed is a nuisance in our garden.

Flowers: Flower heads with disk florets only. Flower heads grow in loose, nodding panicles. We measured a flower head at 4 mm diameter and 10 mm long. The bracts are acute with black tips, we measured a bract at 3 mm long.

Leaves: Leaves are alternate, the lower ones petiolate, the upper ones clasping. They are oblong and coarsely toothed or with wavy margins.

Height: Height listed in Budd's Flora to 40 cm, we measured plants to 24 cm tall.

Habitat: Gardens and other cultivated ground.

Abundance: Common.

Origin: Introduced.

When and where photographed: Photos taken August 7th, bare soil in shrub bed along walking path, in our home city of Regina, SK.