Planteværn Online > Skadevoldere - Weed biology<br> <sub>Agro-region: Denmark</sub> - Spring Groundsel

Crop Protection Online

26.4 2024

Weed biology
_{Agro-region: Denmark}

Spring Groundsel

Can be mistaken for

Coltsfoot, which has true leaves with unbroken edges of leaves.

Greater Plantain, which has true leaves with almost unbroken edges of leaves.

Groundsel, which has thicker leaves.

Characteristics

Cotyledons
Lancet-shaped with entire leaf margins. Stalked. Smooth surface. Length approx. 8-10 mm.

True leaves
Inverted egg-shaped with slightly curved or toothed leaf margins. Stalked. Hairy surface. Length approx. 20-30 mm.

Mature plant
The plant is relatively small with a 15-30 cm high, erect stem. The leaves are woolly haired and with pinnately lobed or pinnatifid leaves. The flower heads are joined in open corymbs. Spring Groundsel can be distinguished from Common Groundsel by the individual flower head having distinct, long and prominent ray corollas. The diameter of the flower head is approx. 20 mm. The seed production ability is unknown.

Seed
Rod-shaped, longitudinally ribbed with round, serrate cross section. The intervening ribs are covered with longish barbate hairs. Thousand grain weight is unknown.

Biology

Propagation and dispersal
Only through seeds.

Habit
Summer and winter annual.

Importance

Spring Groundsel occurs especially in set-aside fields, in hedgerows and by roadsides. In recent years the plant has spread increasingly from the many set-aside fields to neighbouring meadows. There, it is a serious problem in roughage because of its relatively high poisonousness.

For treatment options, consult 'Herbicides Across'.
For more options, consult 'Main Menu'.

Taxonomy

Compositae.

Names in different languages

Danish :	Brandbæger, vår
German :	Frühlingsreiskraut
English :	Spring Groundsel
Latin :	Senecio vernalis
Norwegian :	Vårkorsört
Swedish :	Vårkorsört

Seedling

Early stage

Flower

Mature plant

Seeds

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Weed biology Agro-region: Denmark