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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 August to September.Habitat Usually in sandy soil: open woodlands, forest clearings, croplands, pastures, waste lands, roadsides, disturbed areas; to 6000 ft (1800 m); oc
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