One of the mysteries of the English language finally explained.
A North American plant of the daisy family. Its tiny green flowers produce copious amounts of pollen, making it a major causative agent of hay fever in some areas.
- ‘People who have known sensitivities to ragweed may experience reactions to chamomile and should use caution.’
- ‘Occasionally, broadleaf weeds, such as Canada thistle or ragweed, become established in winter wheat fields and interfere with grain harvest or with the following soybean crop.’
- ‘Many early emerging summer annuals, including giant ragweed, kochia, crabgrass, lambsquarters, and Russian thistle, are removed during tillage, allowing the crop and any new weeds to emerge together.’
- ‘It's used to get rid of dandelions, thistles and ragweed and it kills by causing abnormal cell growth that interrupts the movement of liquids and nutrients in the plant.’
- ‘It is wind-born pollen from plants that have inconspicuous flowers like wild grasses or ragweed that are the major causes of respiratory allergy.’
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