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- 1+ 28- 1
Ageratina Altissima - White SnakerootFound randomly in the woods, this plant is no joke. Say a cow eats it. The plant won't just hurt the animal, but will also poison the milk and meat of the cow, and any human who consumes either will get horribly sick. For real, thousands have died from consuming the milk from cows who gobbled up this white flower, including Nancy Hanks Lincoln, mother of Abraham Lincoln.
- 2+ 73- 8
Nepenthes Attenboroughii - Giant Pitcher PlantNamed after Sir David Attenborough, this large pitcher plant features a distinctive bell shape filled with fluid and upright lid, all of which is perfect to trap, drown, and kill insects and small rodents. While the jury is still out on whether this carnivorous plant actually does eat rodents, any plant with the capability to consume small animals - a capability this one has - is scary enough.
- 3+ 34- 2
Cephalotus Follicularis - Australian Pitcher PlantThis plant, which is as ugly as it is dangerous, looks like a pile of moccasins (and is affectionately nicknamed the moccasin plant), but don't go sticking your feet in this killer. The Cephalotus follicularis has several small pitchers replete with spikes to trap and drown any prey that is unfortunate enough to crawl inside. If that wasn't enough, it also has clear cells inside, which confuse victims while they are being digested.
- 4+ 44- 4
Nerium Oleander - Oleander FlowerYou know those gorgeous pink flowers that your neighborhood green-thumb grows? For the love of god, don't eat them or let your animals eat them! This common garden beauty contains a handful of toxins that can cause nausea, a racing heart rate, excess salivation, poor circulation, seizures, coma, and death in both animals and humans. Basically, eat these pretty flowers, and your body self-destructs.
- 5+ 43- 4
Brugmansia - Angel's TrumpetsAvailable in a variety of colors, in case you have a favorite color to honor en route to becoming a zombie, the angel's trumpets flower is as pretty as it is likely to make you go absolutely insane. Whether you eat the seeds, leaves, or pretty downward-facing trumpet flowers, this beast, ripe with various toxins, will cause confusion, diarrhea, hallucinations, a complete disconnect from reality, amnesia, and eventually death. Though sometimes used recreationally, in one instance, some poor misguided guy amputated a few of his own body parts (tongue and penis included!) after just one cup of Brugmansia tea. Don't do drugs, kids.
- 6+ 52- 6
Aconitum Napellus - MonkshoodFrom the "probably growing in a garden or wooded area close to your home right now" category, this pretty, bluish-purple flower is often dried or just planted for decoration because it looks snazzy. The plant, however, also doubles as a highly lethal cardiac poison - so much so that once upon a time, it was used on spears and arrows to kill enemies and prey.