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| - Toxicity can vary in a plant according to season, the plant???s different parts, and its stage of growth; and plants can absorb toxic substances, such as herbicides, pesticides, and pollutants from the water, air, and soil.Flower April to July.Habitat cropland, fields, pastures, landscaping, roadsides, disturbed sites; usually below 5000 ft (1500 m).Range Native to Europe and Asia; introduced; nat
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