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What Plants Are Toxic To Guinea Pigs?

Guinea pigs are natural foragers who can eat a broad variety of plants, shrubs, herbs, and other vegetation. As a result, it’s critical to make sure your yard is free of plants that could hurt your guinea pigs. Some weeds are even poisonous to guinea pigs.Because guinea pigs have such a keen sense of smell, any plant with a strong perfume can be detrimental to them. Plants with strong fragrances, such as marigold, salvia, and catnip, are toxic to our guinea pigs. Other plants with poisonous leaves and stems, such as peppers, potatoes, wormwood, and others, can be lethal.Because our guinea pigs are unable to vomit, we must be cautious about what they eat. As a result, whatever they eat must travel through their digestive system, which might be problematic if the food is toxic.Before you continue reading, here are a few of our most popular books that will give you with a lot of value. You do not want to miss out on them!

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17 Plants that are poisonous for guinea pigs

Here’s a quick rundown of 17 plants that are regularly seen in our yard that may pose a threat to our guinea pigs.

Sweet Alyssum


sweet alyssum

Alyssum is a lovely blossoming floral plant. The word “Alyssos” was derived from the Greek word “Alyssos.” The word “Alyssos” means “cure of lunacy.”

Alyssum blossoms are edible and can be consumed. They have a sweet and spicy flavor to them. They bloom in the spring, autumn, and winter.

Alyssum is a perennial and annual flowering plant. They have lavender, pink, and purple flowers that are small and white. Their stalks can reach a height of one foot.

They are advantageous because they include important nutrients that help to avoid renal disease and are also used to treat edema and ascites. They also act as a diuretic, preventing the body from conserving too much water.

This useful herb, however, can be harmful to guinea pigs since it can cause allergic reactions. In guinea pigs, they can also induce skin irritation, nausea, and breathing difficulties.

Crown of Thorns


Euphorbia milii,Crown of Thorns, Christ Plant, Christ Thorn, Red flowers, Drought tolerant perennial, Deer resistant perennial, rabbit resistant perennial

The scientific name of the crown of thorns is Euphoria milii. It is a cactus-like plant that is native to Madagascar. They are a woody, succulent, and cactus-like plant.

It comes up with bright green leaves, flowers subtended by red and yellow bracts, and thick sharp black horns. Its horns are used to cover its water-storing branches and stems.

It is also known as christ plant because of the belief that the crown of thorns worn by Jesus Christ is made from the stems of this plant.

The crown of thorns is considered as an ideal house plant. But you need to be cautious while growing them in your house as they are poisonous to guinea pigs and humans.

These plants contain a white milky sap that generates latex. Latex can cause sneezing, wheezing, breathing problems, and irritating ingestion, leading to gastrointestinal issues.

The Crown of thorns also has a toxic chemical present in it, which is known as Phorbol esters. It contains carcinogenic properties in them which contribute to tumor generation in guinea pigs body. Always keep your guinea pigs away from the crown of thorns

Shirley Poppy


What Plants Are Toxic To Guinea Pigs? (With Helpful Images)

Shirley poppy is also known as Papaver rhoeas. It is named after an area of Croydon, which is in Surrey, a part of Greater London.

Shirley poppy is an annual flower that belongs to the poppy family. Shirley poppies are garden flowers. They grow up to 3 feet. Their flowers can grow up to two to four inches. Shirley poppies have straight stems, and they are heat intolerant.

Shirley poppies can grow in a garden. They contribute to many health benefits for humans. They help in breathing problems, cough and cold, sleep disorder, and pain.

Though they are beneficial in some nature, they are poisonous to your guinea pigs. It contains rhoeadine alkaloids. Alkaloids present in flower can cause diarrhea, bone marrow suppression, and liver behavior abnormality in your guinea pigs.

Ingestion of this plant also causes unconsciousness, restlessness, nausea.
It is highly recommended to keep your guinea pigs away from this plant.

If you cultivate this plant, always remember to improve it in an area where your guinea pigs cannot go because guinea pigs are attracted to fresh hay and flowers.




Ageratum is the most common plant among all the ageratum varieties. Their scientific name is Ageratum houstonianum. They are a native of Mexico.

Ageratum is mostly known for its whimsical pompom shaped flowers colored in blue, although other than blue, they come in many colors like white, pink, lavender, red.

Their blooming time is from spring to winter. They can be grown from four to thirty-six inches tall and six to eight inches wide.

They are bad for our guinea pigs as they are consist of some toxic components. It has a pyrrolizidine alkaloids present in it. Pyrrolizidine alkaloids cause liver damage and many other health problems such as lung disease and liver cancer risk for your guinea pigs.

Whenever your guinea pigs are roaming around the garden, always keep them away from this plant.



What Plants Are Toxic To Guinea Pigs? (With Helpful Images)

Strawflowers are a type of annual flower in the Gnaphalieae family. Paper daisy, golden everlasting, everlasting flower, and everlasting daisy are all names for these blooms.

The bracts of strawflowers are crisp and petal-like. Their florets are small and match their bracts. It can reach a length of three inches. They are Australian natives.

They come in a variety of colors, including orange, pink, purple, white, and yellow. Strawflowers can induce allergic dermatitis in guinea pigs, and they can be allergic to them.



Year of the Lantana

Because of its vines, Lantana is a lovely plant. Shrubs are the name given to them. Lantana may be grown both in the garden and in pots. They are tropical annual flowers native to America and Africa’s tropical areas.

It can reach a length of six feet and a width of eight feet. They are available in blue, red, orange, white, and yellow. Lantana is made up of blooms that are grouped in a spherical to give it a lovely appearance.

These lovely plants are poisonous to guinea pigs because they contain toxic compounds. Lantana can induce irritability, respiratory issues, diarrhea, and a variety of other health issues.

Guinea pigs enjoy foraging and eating. If you let your guinea pigs out to forage, keep an eye on them to make sure they don’t get too close to this dangerous plant.

Potato leaves

potato plant

Potatoes are a delicious subterranean veggie to eat. Humans eat them due of their high nutritional value and delicious flavor.

Potato leaves can be eaten. They’re delightful. Potato leaves are high in vitamins C and A, as well as folic acid and other minerals.

They have the proper amount of nutrients, but they are also dangerous to our guinea pigs because they contain a poisonous chemical.

Solanine is produced by potato leaves. Solanine causes health issues such as nausea, diarrhea, sleepiness, and respiratory issues, among others.

Pot Marigold


Pot of Marigolds

Ruddles, Common Marigold, and Scotch Marigold are all names for Pot Marigold. It’s a plant that blooms. Herbaceous perennials are what these plants are.

They can reach a length of 31 inches. They are an annual flower that grows in warmer areas. Their stems are covered in hair.

Pot Marigold is an important folk remedy for skin care and healing.

Apart from these advantages, this plant has some drawbacks for our guinea pigs, as it is harmful to them. They can cause minor discomfort and gastrointestinal difficulties, as well as create a milky sap that irritates our guinea pigs’ skin.


Geraniums in pots.

Geraniums are lovely plants with a relaxing scent. It has lovely flowers and interesting foliage that make it appealing.

They are annual garden plants that can also be used to decorate baskets. Geraniums are commonly grown in gardens, but they can also be grown indoors. They are South African in origin.

Geraniums are poisonous to guinea pigs. Geraniol and linalool are two compounds found in it. Guinea pigs may get skin irritation and diarrhea as a result of these hazardous components.

Wax Begonia


wax begonia planted in-ground

Wax Begonia are perennial plants. It is also known as fibrous begonias. It comes is mainly three colors, such as white, pink, and red blossoms.

Wax Begonia can grow in the garden, and also you can grow them at a pot. They require full sunlight to grow properly, and they like warm temperatures.

Despite their beautiful look, they can be surprisingly toxic to guinea pigs. These plants can cause swelling or redness around your guinea pig’s mouth, and also guinea pigs can face swallowing issues after consuming this plant.



What Plants Are Toxic To Guinea Pigs? (With Helpful Images)Wormwood is a herbaceous perennial plant. These plants are native to Eurasia, North Africa, Canada, and North U.S.A.

It has fibrous roots, and it can grow up to two feet to three feet tall. The leaves of this plant are colored in greenish-grey above and white in below.

Wormwood is used for flavoring some wines and spirits, and it is also used for dyspepsia. Other than these, this plant contains thujone.

Thujone is responsible for many health problems to guinea pigs, such as muscle breakdown, kidney failure, restlessness, stomach cramps.

So it will be highly appreciated if you keep your guinea pigs away from this plant




Snapdragons get their name from the way their blossoms open and close, resembling a dragon.

They are native to Europe, the United States of America, and North Africa. Antirrhinum majus is its scientific name. The blue color of these blossoms adds to their beauty. They are medium-sized plants that can reach a length of three feet.

Snapdragons are not poisonous in most cases. Guinea pigs won’t have any problems if they consume this plant, but it can cause problems if it becomes infected with fungus or viruses.

When guinea pigs eat these plants that have been infected with fungus or viruses, they can develop major health problems.



What Plants Are Toxic To Guinea Pigs? (With Helpful Images)

Pepper plant is a climbing plant with woody stems. It is recognized for its peppercorn-like fruit, which is used for spicing and seasoning.

A mature pepper plant can reach a height of five millimeters. They are Asian in origin.

These plants should not be consumed by guinea pigs. Solanium pseudocapsicum, a member of the solanaceous family, is found in pepper plants.

Solanine can cause a variety of health problems in guinea pigs, including nausea, diarrhea, stomach cramps, throat burning, and a variety of other issues.



What Plants Are Toxic To Guinea Pigs? (With Helpful Images)

Salvia, also known as Salvia Divinorum, is a plant that belongs to the mint family. It is native to Southern Mexico and parts of Central and South America.

Salvia is a shrub, and they are perennial and aromatic. The leaves of this plant are arranged oppositely along with the stems. Stems are square of this plant.

The beautiful colors of this plant come in white, yellow, blue, and red. Their flowers are shaped as tabular. They have various street names such as-

  • Diviner’s Sage
  • Maria Pastora
  • Ska Pastora
  • Hierba Maria
  • Sally-D
  • Magic Mint
  • Shepherdess’s Herb
  • Leaf o Prophecy
  • Lady Salvia
  • Lady Sally
  • Sage of the Seers
  • Purple Sticky
  • The Female
  • Incense Sticky

Salvia has some side effects when it comes to our guinea pigs. They contain hallucinogens that can cause visual distortions of bright lights and a sense of uneasiness.

They also cause health problems to guinea pigs, such as nausea, dizziness, immobility, etc.



What Plants Are Toxic To Guinea Pigs? (With Helpful Images)

Catnip also goes by the names catwort and catmint. The Lamiaceae family includes them. Nepeta Cataria is their scientific name. Southern and eastern Europe, the Middle East, Central Asia, and China are all home to them.

Catnip has a rather limited lifespan. They are perennial and herbaceous. It can reach a height of twenty to forty inches.

Sauces, soups, and stews are all flavored with them. Herbal teas are made from catnip leaves. It helps with digestion and interstitial cramps. Catnip can be dangerous to guinea pigs, causing nausea and headaches.



Cleome Hassleriana 'Sparkler Blush', Spider Flower 'Sparkler Blush', Spider Plant 'Sparkler Blush', Pink Queen 'Sparkler Blush', Cleome spinosa 'Sparkler Blush', Cleome 'Sparkler Blush', Tall Annual Flowers, Tall Flowers, Pink annuals, Pink Flowers

Cleome belongs to the cleomaceae family of flowering plants. Spider flower, spider plant, spider weed, and bee plant are all names for the same plant.

It’s a flower that blooms once a year. They’re a North American species. Cleome can reach a height of one to five feet and a width of one to two feet. They are typically seen in gardens.

Cleome is utilized as a food as well as a medicinal. Its therapeutic uses include treating bronchitis and alleviating discomfort.

They have several drawbacks to guinea pigs, such as the ability to cause swelling in the guinea pig’s stomach.

Globe Thistle


A close up horizontal image of Echinops ritro growing in a summer garden border.

Excellent globe thistle and pale globe thistle are other names for globe thistle. Echinops sphaerocephalus is its scientific name, and it belongs to the sunflower family.

Globe thistle is a perennial herbaceous plant. It can reach a height of twenty to forty inches. It has hairy, gray, and wrinkled stems. It has pointy, velvety leaves that are green in hue.

Their flowers are prickly and can last up to eight weeks. Summer is when they blossom, and they come in blue, purple, and white colors.

This plant contains toxins that are toxic to guinea pigs. Guinea pigs may get health problems as a result of them. They can induce stomach pain, diarrhea, renal difficulties, bladder stones, and have an influence on the urinary tract.

Guinea pig ate poisonous plant

Guinea pigs enjoy foraging and eating. If they ingest any poisonous plants while foraging, this is a major hazard that can result in death.

If you detect any strange behavior or signs of poisoning, call your veterinarian or take them to a veterinary facility right away.

Allow the veterinarian to thoroughly check your guinea pig in order to determine the source of the poisoning; alternatively, if you are aware of a dangerous plant, inform the veterinarian so that treatment can begin quickly.

Always remember to feed your guinea pigs all medications prescribed by the vet after the necessary check-ups.

Signs of guinea pig poisoning

When a guinea pig eats a hazardous plant, their body will experience some discomfort.

Always be on the lookout for such indicators of discomfort.

When guinea pigs aren’t feeling well, always be aware of their signals. Let’s have a look at the signs:

  • Abdominal discomfort
  • Internal hemorrhage
  • Bruising on the outside
  • Exhibiting melancholy behavior, such as withdrawing from you
  • Bloating
  • Diarrhea
  • Problems with constipation or bowel movement
  • Issues with the lungs
  • In the mouth, there is redness and swelling.
  • Trying to get away from eating
  • Heart rate is slow.
  • Reduce your body’s temperature
  • Unconsciousness
  • Weakness

If you experience any of these symptoms, you should contact a veterinarian right away.