18 plants that are poisonous for cats

Plants can bring a room to life, and that’s likely what you’re thinking about when you buy them. But if you’re a pet parent, it’s important to double-check whether an indoor plant is toxic before bringing it into your home – or if these toxic plants are already in your home. In minor cases, plants toxic to cats can cause gastro upset or skin irritation, but in serious cases, it can lead to organ failure, seizures or even death.

Cats nibble on plants to get extra nutrients and fibre, just like humans do, but unfortunately, they don’t always know the difference between bad plants and good plants. For that reason, it’s your responsibility to ensure that your feline doesn’t have access to any house plants poisonous to cats. With expert help, we’ve outlined some of the most common house plants every cat owner should avoid – and provided some suggestions for the perfect non-toxic replacements.

If you suspect that your cat has chewed on or ingested a potentially toxic plant in your home or garden, Dr Zacharias recommends taking a picture of the plant and immediately heading to your veterinarian. It does not matter the quantity they consumed – it is better to be safe because the repercussions can be that dire. Plus, the plant does not have to be ingested in order to be poisonous. Simply chewing on the plant can be toxic. A poisons’ hotline can be called en route to the vet or once the cat has arrived. How quickly treatment is started often makes a significant difference in the patient’s health and outcome.

You shouldn’t attempt to induce vomiting in a cat, no matter what you’ve read on the Internet. A veterinarian’s expertise is needed here.

It’s also important to note that cats are very skilled at hiding their symptoms – it’s a defence mechanism that keeps them safe. Call your vet or your local poisons’ hotline if you suspect that your cat has eaten one of these poisonous plants below, even if they aren’t acting overtly sick. That said, symptoms such as diarrhoea, lethargy and vomiting are all difficult to hide, so be on the lookout for those signs.

And if you are also a dog parent, here are 15 plants that are poisonous to dogs.

Toxic components: Insoluble calcium oxalates

This indoor plant may be beautiful, but it is highly toxic – even life-threatening – to cats, says veterinarian Shelly Zacharias. “Lab work, including blood and urine, will be checked at various times over a span of several days [if your cat consumes lilies],” says Dr Zachararias. “Depending on these results, the veterinarian will discuss a monitoring plan for kidney function or long-term therapy, if needed.”

Swap it: In lieu of lilies, opt for a white orchid. They’re non-toxic to pets, gorgeous and surprisingly easy to take care of.

Toxic component: Eucalyptol

Popular for its fragrant, mind-soothing leaves, the pale green eucalyptus plant should be kept out of reach from cats. “When a cat consumes enough eucalyptus leaves to get sick, we expect to see signs like drooling, vomiting, decreased appetite and diarrhoea,” says veterinarian Jo Myers. “Those symptoms are expected to be relatively minor and to go away without any specific treatment within 24 hours.” She adds that even higher concentrations of eucalyptol are found in eucalyptus essential oils, so be mindful when using these products.

Swap it: Rosemary, which is also known for its wonderful scent, is an excellent replacement for eucalyptus.

If you’re allergic to cats but still adore them, you’ll definitely want to check out 8 hypoallergenic cats for people with allergies.

Toxic component: Cycasin

Palms add wonderful lushness and tropical vibes to a room, but not all are pet-friendly. The sago cycad contains cycasin, which is extremely toxic to cats. It should be completely avoided, as it can cause dangerous gastrointestinal and liver damage, and in some cases even death. The smaller the pet, the more greatly they’ll be impacted.

Swap it: For a similar tropical vibe, try the parlor palm instead. It’s a breezy, bright green plant that’s also known as the bamboo palm or good luck palm.

Toxic components: Insoluble calcium oxalates

It’s leafy and exotic-looking, so it’s no wonder that the alocasia is such a popular houseplant. Unfortunately, it’s a no-go if you have a cat because it contains insoluble calcium oxalates that cause kidney failure.

Swap it: The calathea medallion offers the same tropical vibes and rich green foliage that the alocasia does, but it’s completely safe for your kitty. It is also a low-maintenance plant that even those without a green thumb can keep healthy.

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Toxic component: Unknown

Also referred to as jade, money plants or lucky plants, rubber plant can cause vomiting, neurological symptoms, and sometimes even depression, says Dr Zacharias. The toxic component isn’t completely understood at this point, but it’s important to seek veterinary care immediately if you suspect your cat has eaten this plant. “Treatment will consist of vomiting, only if the patient is not neurologically impaired (i.e., if not acting ‘drunk’ or uncoordinated), activated charcoal, intravenous fluids to help support the patient and flush the toxin more rapidly from the body, monitoring, and symptomatic support,” says Dr Zacharias.

Swap it: The haworthia retusa offers the same thick and juicy leaf structure as jade, but it’s not a plant that’s toxic to cats.

Toxic components: Saponins, anthraquinones

Though aloe vera is often a household staple – especially in the kitchen, where its healing powers can be employed at the ready – this plant is toxic to cats. The gel itself is actually considered edible when extracted, but the thick plant material that surrounds the gel can cause gastro upset (including vomiting), lethargy and diarrhoea.

Swap it: The haworthia zebra succulent is technically smaller, but it offers a similar aesthetic. You can buy these plants in varying sizes and colours, and because they’re also succulents, they’re just as easy to care for.

Who doesn’t love easy to maintain succulents. Find out here how to have success with succulents.

Toxic components: Insoluble calcium oxalates

This plant goes by a few different names, including pothos, golden pothos, and taro vine. Dr Zacharias says, “It contains insoluble calcium oxalates that cause mouth, throat, tongue and lip irritation, [as well as] intense burning, excessive drooling (hypersalivation), vomiting, and difficulty swallowing.”

Swap it: The Chinese money plant of the Pilea genus family is considered non-toxic to cats and offers the same drooping aesthetic as ivy. Bonus: Those types of non-toxic plants may also bring good feng shui into your home.

Toxic component: Cyanogenic glycoside

Hydrangea blossoms are known for their lush, colourful beauty, but they can cause your cat to become ill if consumed. “When a cat eats enough hydrangea to get sick, we expect symptoms to start within a couple of hours of eating the plant,” says Dr Myers. “Most cats will become nauseated, drool a lot and start to vomit. Diarrhoea usually follows, and that diarrhoea may be very bloody.”

Swap it: Available in a broad range of beautiful colours, zinnias make an excellent non-toxic alternative to hydrangea.

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Toxic components: Insoluble calcium oxalates, proteolytic enzymes

There are many varieties of the dumbcane – including the giant dumbcane, charming dieffenbachia and exotica perfect – and all of these plants are toxic to cats. Ingesting it can cause oral irritation, intense burning of the mouth, tongue and lips, excessive drooling, difficulty swallowing and vomiting. If you suspect your cat has consumed dumbcane, call the poison control hotline and/or your veterinarian for assistance immediately.

Swap it: The prayer Plant looks very similar to dumbcane, but it’s cat-safe and vet-approved.

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Toxic components: Saponins

Mother-in-law’s tongue is a wildly popular hard-to-kill houseplant anyone can grow. Also known as snake plant, it contains chemical compounds called saponins, which result in feline nausea, vomiting and diarrhoea if consumed or chewed. If you suspect your cat has chewed on or eaten this plant, call your veterinarian or a poisons’ hotline immediately. You’ll be given instructions based on the severity of the symptoms.

Swap it: The caeroba is a non-toxic plant that very closely resembles a mother-in-law’s tongue with its beautiful, lush and pointed leaves.

Toxic components: Lectin, wisterin glycoside

The winding wisteria plant is renowned for its beauty and fragrance, but cat owners should skip this pretty purple flowered plant. When consumed, the effects aren’t quite as severe compared to other plants, but cats can still experience gastro upset that can lead to vomiting and diarrhea (sometimes bloody), and even depression.

Swap it: Petunias, which you can find in a lovely shade of purple, get the stamp of approval for cats.

If you want your pets to enjoy your garden as much as you do, follow these 5 easy ways to make your garden pet-friendly.

Toxic component: Lycorine

These gorgeous flowers don’t just attract people. Cats may also be drawn to the giant, vibrant flowers that are often found in floral arrangements or planted as bulbs. But when they nibble on this type of lily, they can experience stomach pain, excess drooling, tremors, diarrhoea, vomiting and a decrease in appetite.

Swap it: Orchids offer an exotic burst of colour and are non-toxic to cats. If you buy a potted orchid, it’ll last even longer.

Toxic components: Soluble calcium oxalates

This colourful flowering plant is also referred to as rock moss and purslane, so be aware when you’re plant shopping. Despite its beauty, this houseplant is incredibly poisonous to cats – and can even be deadly – so you should avoid it altogether. It can result in tremors, kidney failure and hypersalivation, and if your cat has ingested it, you should seek immediate emergency treatment. “Treatment will include inducing vomiting, gastrointestinal decontamination, intravenous fluid therapy for one to three days minimum, monitoring and any supportive treatment,” says Dr Zacharias.

Swap it: If you’re craving a colourful plant, try the African Daisy instead.

Toxic components: Furanocoumarins

Often used as a garnish in dishes and one of the easiest plants to grow in small spaces, parsley is unfortunately not an ideal plant to keep around if you’re a cat parent. Like some plants on this list, its toxicity isn’t as dangerous compared to some plants. However, when consumed in large quantities, or consistently over time, it can cause photosensitisation that makes your cat more susceptible to sunburns.

Swap it: Sometimes confused for parsley, coriander is an alternative that you won’t have to worry about.

Toxic components: Sesquiterpene, lactones, pyrethrins, and other potential irritants

This is another colourful flowering plant that’s off-limits to cats because of its toxicity. Consumption can result in vomiting, diarrhoea, hypersalivation, incoordination and dermatitis (a skin reaction). “Immediate veterinary treatment is needed,” says Dr Zacharias. “Treatment will include controlling clinical signs with anti-emetics and anti-diarrhoea medication, bathing if the skin is affected, and possibly intravenous supportive fluid therapy.”

Swap it: With their colourful flowers and rich foliage, African violets make a great, non-toxic alternative to chrysanthemum.

Don’t have luck keeping plants alive? Here are 10 house plants that are near impossible to kill.

Toxic component: Solanine

As part of the nightshade family, tomato plants contain a substance called solanine that is toxic to pets. The green vine and non-ripened fruits are poisonous and, when consumed, can cause drooling, loss of appetite, severe gastro upset, slowed heart rate and dilated pupils.

Swap it: It’s best to keep your tomato plants well out of your cat’s reach. If you want to grow a fruiting vine plant indoors, try the non-toxic buttercup squash instead.

Toxic component: Grayantoxin

Azaleas are typically grown as ornamental outdoor foliage, but they’re also found in floral arrangements or sometimes kept as indoor potted plants. If your cat eats any part of the plant, it can cause vomiting, diarrhoea, weakness and potentially cardiac failure.

Swap it: For a similar splash of colour, try the red camellia as an alternative.

Toxic component: Tulipalin A and B

A springtime favourite, tulips are among the most notable poisonous plants to cats. According to Dr Zacharias, the bulb has the highest concentration of toxins, but the entire plant itself is actually poisonous. Reactions include vomiting, depression, diarrhea and hypersalivation. Consult your vet right away to control clinical signs and prevent hydration.

Swap it: Instead of tulips, opt for another springtime favourite – peonies. This fluffy floral, technically known as camellia japonica, comes in many colours and offers that burst of pastel beauty we often crave once temperatures begin to rise.

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Source: RD.com