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ISATIS TINCTORIA

Before 1850, Americans grew Dyer’s woad for blue dye; in the Great Basin, one infestation later grew from 12,000 to 150,000 acres in eight years
Dyer's woad, once used for blue dye, has become an invasive species in the American West. This plant produces a high number of seeds and th...
20 Oct, 2026, 04.30 PM IST

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