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Top 5 most poisonous plants (to humans)

evergreen

Toxicity / lethality of compound — Living-world superlatives

Snapshot · 2026-05-31

  1. 1

    Abrus precatorius (Rosary Pea)

    abrin - one chewed seed can be lethal

  2. 2

    Atropa belladonna (Deadly Nightshade)

    tropane alkaloids - single leaf can kill

  3. 3

    Cerbera odollam (Suicide Tree)

    cerberin - ~500+ documented fatal poisonings (Kerala, 1989-99)

  4. 4

    Ricinus communis (Castor Bean)

    ricin

  5. 5

    Brugmansia spp. (Angel's Trumpet)

    scopolamine and atropine