#11 Angel’s Trumpet

Angel’s trumpets are woody-stemmed bushes with pendulous flowers that hang like bells. They are decorative additions to the garden because of elegant flowers. However, the catch is that all parts of these plants contain dangerous levels of poison and may be fatal if ingested by humans or animals.

#12 Monkshood

Monkshood has a long tradition as a deadly plant and was used by ancient warriors to poison the water of their enemies. It was also once used as a popular werewolf-detection tool. In 2015, a gardener died of multiple organ failure after brushing past this deadly purple flowering plant on the estate where he was working in the U.K.

#13 White Snakeroot

White snakeroot contains the toxin tremetol, which can be poisonous if consumed directly or second-hand. When snakeroot is eaten by cattle, the animals’ beef and milk become contaminated with the toxin, and ingesting those substances can lead to a condition called milk sickness.

#14 Larkspur

The seeds and young plants of the larkspur are toxic to both people and animals. Toxicity decreases as the plant ages. Symptoms of poisoning include general weakness and muscle spasms, as well as abdominal pain and nausea. Eventually, it can lead to respiratory distress, paralysis, and death.

#15 Foxglove

The seeds, stems, flowers, and leaves of the foxglove plant are poisonous. Symptoms can also include digestive issues, headaches, blurred vision, and confusion and can eventually lead to death.

#16 Melia Azedarach

In Australia, it’s known as white cedar. B Its fruits contain a mixture of poisons, including neurotoxins, which can harm humans (as few as 6 to 8 berries can kill a person). Birds, however, can tolerate them, so they eat the fruit and spread the seeds.