Herbs you see commonly in spells which can actually kill you:
Belladonna or Deadly Nightshade
▪︎Water hemlock has been deemed "the most violently toxic plant in North America - water hemlock is infused with deadly cicutoxin, especially in its roots, and will rapidly generate potentially fatal symptoms in anyone unlucky enough to eat it. Painful convulsions, abdominal cramps, nausea, and death are common, and those who survive are often afflicted with amnesia or lasting tremors.
▪︎Deadly Nightshade - it is the sweetness of the berries that often lures children and unwitting adults to consume this lethal plant. It has dull green leaves and shiny black berries about the size of cherries. Nightshade contains atropine and scopolamine in its stems, leaves, berries, and roots, and causes paralysis in the involuntary muscles of the body, including the heart. Even physical contact with the leaves may cause skin irritation.
red tomato-like berries on vines are equally as poisonous.
▪︎White Snakehook - North American herb with flat-topped clusters of small white flowers and contains a toxic alcohol known as trematol. Both the meat and milk from poisoned livestock can pass the toxin to human consumers. Symptoms of "milk poisoning" include loss of appetite, nausea, weakness, abdominal discomfort, reddened tongue, abnormal acidity of the blood, and death.
▪︎Castor Beans - While the processed seeds are the source of castor oil, they naturally contain the poison ricin and are deadly in small amounts. It only takes one or two seeds to kill a child and up to eight to kill an adult. Can cause severe vomiting, diarrhea, seizures, and even death.
▪︎Rosary peas - are native to tropical areas and are often used in jewelry and prayer rosaries. While the seeds are not poisonous if intact, seeds that are scratched, broken, or chewed can be lethal. It only takes 3 micrograms of abrin to kill an adult, less than the amount of poison in one seed, and it is said that numerous jewelry makers have been made ill or died after accidentally pricking their fingers while working with the seeds.
▪︎Oleander - is meant to be admired. If eaten, oleander can cause vomiting, diarrhea, erratic pulse, seizures, coma, and death, and contact with the leaves and sap is known to be a skin irritant to some people.
▪︎Jimsonweed - green berries with x's in the center on red/dark pink branches- also known as devil’s weed, hell’s bell and devil’s trumpet, grows across United States, Canada and some of Caribbean Islands. The plant have power to alter mind condition, act as a powerful hallucinogen. But elements of poison can be found within most of all part of Jimsonweed, mostly concentrated in leaves and seeds.
▪︎Aconite - purple and Lavendar colored flowers, also called as monkshood, wolf’s bane and Leopard bane. Most parts of monkshood plant contains poisonous alkaloid. The roots and rot tubers are extreme toxic in nature. Ancient Greeks used it’s toxin for killing leopards and wolfs and it called as wolf’s bane.
As there are herbs to help combat against and ward off evil:
☆Ward Off Evil both Spiritual & Mundane Plants/Herbs
~ Acacia, Basil, Agrimony, Sandalwood, Boneset, Mullein, Rosemary, Frankincense, Rue, Violet, Caraway, Balm of Gilead, Fern, Lilac, Periwinkle
~ Lavender, Dandelion, Hyacinth, marigolds, clove, sage, violet, lilac, rose, rosemary, Frankincense, chamomile
~rosemary, Lavendar, Eucalyptus, aloe, clove, mint, basil, ginger, cinnamon
~ Dragonsblood, Cactus, Garlic, Rue, Heliotrope, Lilac, Lavendar, basil, mint, clove, sage, rose, Frankincense
[Sources: https://www.britannica.com/list/7-of-the-worlds-deadliest-plants and https://themysteriousworld.com/most-deadliest-plants-in-the-world/]