A toxic plant is a plant that can injure or even kill a person or animal if touched or eaten in a large amount. The study of plant poisons is named phytotoxicology. Most poisonous plants are blooming plants (angiosperms), but only a tiny number are officially identified as toxic. Various systems have been developed to categorize poisonous plants, but none of them are ideal.
Identification of Poisonous Plants
Recognizing poisonous plants can be difficult because they usually look identical to non-toxic plants or their harmless companions.
To determine the poisonous plants learn about typical toxic plants in your region and educate yourself about their appearance like leaves, flowers, and fruits.
Common Poisonous Plants
1. Poison ivy
Poison ivy is a plant located throughout the United States. It commonly grows as a vine or small scrub with three shiny leaves. The leaves switch colors with the seasons and may have blooms or berries. Handling poison ivy can cause skin irritation.
2. Castor oil plant
This plant is occasionally used in landscaping, but its seeds contain a poisonous substance. If an individual or an animal eats these seeds, it can be very harmful and even fatal. Manifestation can cause severe vomiting, diarrhea, and dehydration, and it can also provoke kidney and liver failure, leading to death.
3. Poison oak
Like poison ivy, this plant can be a vine or a small shrub. It can render skin annoyance with signs such as itching, redness, and occasionally blisters.
4. Giant hogweed
This plant is regarded as invasive and can grow up to 14 feet tall. It is generally found in several states including New York, Pennsylvania, Ohio, Maryland, Oregon, Washington, Michigan, Virginia, Vermont, New Hampshire, and Maine. If the fluid of this plant comes into contact with skin and is exposed to sunlight, it can cause painful burns and leave endless scars.
Common poisonous flowers
1. Oleander
This garden shrub has beautiful blooms, but every part of it is very toxic to animals and people. Just a minute bit can cause serious harm. If an individual or an animal eats it, they might have symptoms like an irregular heartbeat, shaking, feeling sleepy, or disorder.
2. Bitter nightshade
This vine-like plant is located in the United States and other territories of the world. While the stalk has historically been used in conventional medicine for skin disorders, there is no solid proof proving its usefulness. However, it's important to note that both the leaves and berries of this plant are poisonous and should not be consumed.
3. Lily of the Valley
This plant, with its attractive white flowers, can be harmful if eaten by humans or pets. Every part of the plant is toxic because it possesses a substance called cardiac glycosides. This substance can stop the heart from pumping appropriately.
4. Hydrangea
Hydrangeas are a widespread shrub known for their clusters of pink, purple, white, or blue flowers. While they can be harmful if eaten in immense quantities by people or pets, the symptoms commonly include stomach aches, nausea, vomiting, and sweating. However, it is usually not fatal.
Precaution measures
- Wear long sleeves, long pants, boots, and gloves when operating outdoors.
- Clean exposed clothing separately in hot water with detergent to remove any plant oils.
- Consider using barrier skin creams, such as lotion having bentoquatum, for added protection.
- After using gardening instruments, clean them entirely with rubbing alcohol or soap and plenty of water. Urushiol, the toxin in these plants, can stay active on surfaces for up to 5 years.
- Use disposable gloves during cleaning and handling of potentially tainted objects.
- Avoid burning plants or brush bundles that may contain poison ivy, poison oak, or poison sumac. Inhaling smoke from burning these plants can provoke extreme allergic respiratory issues.