Planteværn Online > Skadevoldere - Weed biology<br> <sub>Agro-region: Denmark</sub> - Marsh Cudweed
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18.4 2024 undefined

Weed biology
Agro-region: Denmark

Marsh Cudweed Previous page Next page

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Characteristics

Cotyledons
Oval with entire leaf margins. Sessile. Smooth surface. Length approx. 4-6 mm.

True leaves
Lancet-shaped, narrower towards the base. Hairy surface. Length approx. 6-10 mm.

Mature plant
Marsh Cudweed is 5-10 cm high with an erect stem. Densely whitish felted at the top. Flower heads in clusters at the upper axils. The membraneous part of the bracts is pointed, often entire.

Seed
No information.

Biology

Propagation and dispersal
Only through seeds.

Habit
Summer annual.

Importance

The species can be found on farm land, in gardens, near ponds and lakes. Only at large densities of Marsh Cudweed is there any real loss of yield in the crops.

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Taxonomy

Compositae.

Names in different languages

Danish : Evighedsblomst, sump
German : Sumpfruhrkraut
English : Marsh Cudweed
Latin : Gnaphalium uliginosum L.
Norwegian : Åkergråurt
Swedish : Sumpnoppa
Marsh Cudweed: Very early stage
Very early stage
Marsh Cudweed: Early stage
Early stage
Marsh Cudweed: Flower
Flower
Marsh Cudweed: Mature plant
Mature plant
 
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