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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 May to October.Flower June - July; September - OctoberHabitat Sunny sites with dry to moderate moisture: prairies, pastures, abandoned fields, stream banks, glades, open
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