Planteværn Online > Skadevoldere - Weed biology<br> <sub>Agro-region: Denmark</sub> - Canadian Fleabane
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24.4 2024 undefined

Weed biology
Agro-region: Denmark

Canadian Fleabane Previous page Next page

Go to identification key for weeds

Characteristics

Cotyledons:
Oval to oblongly oval. Stalked. Smooth surface. Length approx. 1-3 mm.

True leaves:
Egg- to lancet-shaped with slightly serrate leaf margins. Stalked. Clearly hairy surface. Length approx. 3-5 mm.

Mature plant:
The species is a medium-sized plant with 20-60 cm high, erect stems. The plant feels stiff and hispid to rough. The 3-5 mm broad flower heads sit in a richly branched panicle. The seed production ability is unknown.

Seed:
Rod-shaped with lancet-shaped to elliptical cross section. At one end 2-3 mm long pappus hairs can be seen, which fall off easily, however. Otherwise, the surface is smooth with sparse hairs. The thousand grain weight is unknown.

Biology

Propagation and dispersal
Only through seeds.

Habit
Summer and winter annual.

Importance

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

Taxonomy

Kurvblomst.

Names in different languages

Danish : Bakkestjerne, canadisk
German : Kanadisches Berufkraut
English : Canadian Fleabane
Latin : Conyza canadensis L.
Norwegian : Hestehamp
Swedish : Kanadabinka
Canadian Fleabane: Very early stage
Very early stage
Canadian Fleabane: Early stage
Early stage
Canadian Fleabane: Flower
Flower
Canadian Fleabane: Mature plant
Mature plant
Canadian Fleabane: Seeds
Seeds
 
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