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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 September.Habitat Dry, sandy or gravelly places; fields, waste places, fence rows, railways, roadsides; to 4200 ft (1300 m).Range Native to the desert southwest,
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