What flower symbolizes evil?

Online Answer
Thistle. A thorny plant with a beautiful flower, the national symbol of Scotland. It's thorns symbolize both evil and protection.
Related Questions 📌
: any of various prickly composite plants (especially genera Carduus, Cirsium, and Onopordum) with often showy heads of mostly tubular flowers also : any of various other prickly plants..
I feed the seeds to my chickens as a supplemental treat, and have had no adverse effects. They may not be interested in the flowers nor the plant, most of which are quite spiny.