Weed an enemy of disturbed soils

Noxious Weeds: Scentless chamomile prolific and problematic

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Scentless chamomile can be found across the province. Starland County, Parkland County, MD of Lesser Slave River, and Saddle Hills County are just a few of the municipalities with confirmed populations of this plant.

Scentless chamomile is a prolific seed producer, with large, healthy plants able to produce up to one million seeds each.

Plants have few to many highly branched stems and are known for their daisy-like flowers. Its flowers are occasionally confused with ox-eye daisy, but is easily differentiated by its fine, carrot top-like leaves. As the name suggests, scentless chamomile leaves have no odour when crushed.

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Infestations are commonly caused by contaminated crop or forage seed and contaminated equipment. While this species does not compete well with healthy crops, it can still be very difficult to eradicate. Control is usually obtained by hand pulling plants. Chemical control is possible if plants are identified and sprayed early in the growing season. The fine fern-like leaves can make chemical control difficult later in the plant’s development.

This noxious weed is easily controlled if action is taken early, but control can become time consuming and costly later on. For more information on this or any invasive plant, contact your local Agricultural Fieldman or the Alberta Invasive Species Council.

–Dawnia Myshak is an agricultural fieldman for the MD of Lesser Slave River.

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