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  1. Jun 16, 2021 · Learn the features and habits of the three most common poisonous plants in North America, such as leaves, stems, berries, and bark. See photos and tips to avoid contact with urushiol, the allergen that causes rashes and itching.

  2. Mar 12, 2024 · Learn how to identify poison ivy, a plant that causes an allergic reaction and rash when touched. See pictures of poison ivy and find out how to treat the rash at home or when to see a doctor.

    • Jeri Burtchell
  3. May 7, 2020 · Learn how to spot poison ivy in different seasons and avoid its oily sap that causes allergic reactions. See photos of poison ivy, poison oak, and poison sumac, and how to remove and treat them.

    • Corey Whelan
  4. Nov 25, 2022 · Learn how to identify and avoid poison ivy, oak, and sumac, and what to do if you touch them. See slideshow of rashes and plants, and get tips on prevention and treatment.

  5. See images of red, itchy bumps, black spots or streaks, and blisters caused by these poisonous plants. Learn how to identify, prevent, and treat the rash from urushiol oil.

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  7. May 15, 2024 · Poison ivy leaves vary greatly in their shape, color and texture. Some leaves have smooth edges, while others have a jagged, tooth-like appearance. In the fall, the leaves may turn yellow, orange or red. Poison ivy can produce small, greenish flowers and green or off-white berries.

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