6. Oleander (Nerium oleander)

Oleander dazzles with its vibrant, fragrant blossoms, often making it a centerpiece in gardens and indoor spaces.
However, this plant contains potent cardiac glycosides that can disrupt heart function and are potentially fatal if ingested by pets or children.
There have been several alarming incidents of accidental poisoning, where even a small amount caused serious medical emergencies.
If you have kids or animals at home, it’s best to admire Oleander from afar and opt for safer alternatives.