We all love looking at fresh flowers. Something about the smell of fresh cut blooms is relaxing and calming. The oils and parts from certain plants can also be beneficial for your health, complexion, mosquito control, and eating, of course.

The Natural Beauty of the Lone Star State

Texas is home to various native plants, truly some of the most beautiful and unique flora and fauna you will find in the country. But beware, some of these beauties are toxic or potentially deadly if ingested or improperly handled. Here are some of the most notable deadly native plants in Texas, focusing on their identification, toxicity, and potential risks to humans and animals:


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Poison Hemlock Proliferates On Kent Roadsides
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Water Hemlock (Cicuta maculata)

  • Description: A tall plant with small white flowers arranged in umbrella-shaped clusters.
  • Toxic Parts: All parts of the plant, especially the roots.
  • Toxin: Cicutoxin.
  • Effects: Extremely poisonous, can cause seizures, respiratory failure, and death.
Credit: Texas A&M University
Credit: Texas A&M University
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Texas Mountain Laurel (Sophora secundiflora)

  • Identification: Evergreen shrub with glossy, dark green leaves and dense clusters of purple-blue, fragrant flowers. The plant produces hard, red seeds.
  • Toxicity: Seeds contain cytisine, a potent neurotoxin.
  • Risks: Ingesting the seeds can cause nausea, vomiting, convulsions, and even death. The seeds are highly toxic, especially to children.
  • Precautions: Warn children and others not to ingest the seeds, and remove fallen seeds from areas where they may be accessible.
Credit: LSU Ag Center, Mary S. Bowen
Credit: LSU Ag Center, Mary S. Bowen
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Oleander (Nerium oleander)

  • Description: A shrub with long, narrow leaves and clusters of white, pink, or red flowers.
  • Toxic Parts: All parts of the plant.
  • Toxin: Cardiac glycosides.
  • Effects
    Larry Allain, U.S. Geological Survey
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    Larry Allain, U.S. Geological Survey

    Castor Bean (Ricinus communis)

    • Description: A large plant with large, star-shaped leaves and spiny seed pods.
    • Toxic Parts: Seeds.
    • Toxin: Ricin.
    • Effects: Severe abdominal pain, vomiting, diarrhea, and can be fatal due to its highly toxic nature.
    Larry Allain, U.S. Geological Survey
    Larry Allain, U.S. Geological Survey
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    Jimsonweed (Datura stramonium)

    • Description: A plant with large, trumpet-shaped flowers and spiny seed pods.
    • Toxic Parts: All parts, particularly the seeds.
    • Toxin: Tropane alkaloids.
    • Effects: Hallucinations, seizures, and can be fatal.

    General Safety Tips

    • Education: Be aware of the plants in your area and educate others about the risks.
    • Avoidance: Do not consume any wild plants unless you are absolutely certain of their safety.
    • Emergency Response: If poisoning is suspected, seek immediate medical attention, and if possible, bring a sample of the plant for identification.

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