Poisonous plants with pretty flowers? For my story I'm having a nerdish inventor type character flirting with an heir to a crime empire the inventor is kinda saying you're beautiful but deadly
Hi, Fight-me-boi. What is probably the most poisonous tree in the world is the manchineel tree. But I’m not going to recommend your character use it. For a few reasons a)I can’t find pictures of its flowers to be able to say it’s beautiful and b) it’s so dangerous that standing under one in the rain can give you blisters and inhaling the smoke of one burning can make you go blind. If you search for images of them, there are signs posted on them to warn people to stay away because of how dangerous.
I started with that because you weren’t completely clear on how poisonous you wanted the plant to be. Going off of the “beautiful but deadly” I’m going to try to stick with plants that can kill humans.
My favorite flower is Lily-of-the-Valley. But even though it looks so dainty, the plant contains 38 different cardiac glycosides. All parts of the plant are toxic.
Hemlock is a classic poison, but there are actually two famously poisonous hemlock plants. Poison hemlock is poisonous if eaten and will numb the extremities with the numbness creeping in until the lungs are paralyzed. Water hemlock, which is considered the most poisonous plant in North America, causes violent, painful convulsions and cramps.
Aconite, aka wolfsbane, aka monkshood, aka devil’s helmet, is another traditional poison. It was used by shepherds to poison arrows shot at wolves that would prey on the flocks and the poison ultimately works by respiratory failure.
Larkspur is related to Arconite and is similarly dangerous. Brief contacts with stems and leaves can irritate the skin and ingestion will lead to respiratory paralysis, and thus death.
Oleander is quite pretty and very toxic. The entire plant, including nectar, is poisonous. It’s said that as little as 100g is enough to kill a full-grown horse.
Yellow Jessamine has similar alkaloids to strychnine which makes it quite poisonous, even to honeybees gathering its nectar.
There are many many more poisonous plants that fit these criteria. Too many to show in one post. Some of them are:
Mother of Millions
I hope this helps.