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What herbs are unsafe for cats?

by Anita Brown
What herbs are unsafe for cats?

Are herbs safe for cats? It’s an important question for all pet owners, especially those with cats. Unfortunately, not all herbs are safe for cats. In fact, some herbs can even be toxic. Garlic, chives, onions, leeks, scallions, and shallots are all members of the allium family, and they are highly toxic to cats. Even a small ingestion of these herbs can cause damage to your cat’s red blood cells, leading to anemia or even death. So what other herbs are unsafe for cats? Is oregano toxic? Is thyme harmful? Is basil a danger? What about parsley and peppermint?

In this blog post, we’ll answer all of these questions and provide more information about the dangers of herbs for cats. We’ll discuss the risks of each herb and provide tips for keeping your cat safe. So if you’re wondering what herbs are unsafe for cats, keep reading to learn more.

What herbs are unsafe for cats?

Herbs can be a great way to add flavor and nutrition to your cat’s diet, but it’s important to be aware of which herbs are safe for cats and which are not. While some herbs, such as catnip, have long been known to be beneficial to cats, there are others that can be toxic or even deadly. In particular, members of the allium family, such as garlic and chives, can be very dangerous for cats.

The Dangers of Allium-Family Herbs

Garlic and chives are by and large the most dangerous herbs for your cat. In fact, all members of the allium family—including onions, leeks, scallions, and shallots—are toxic to felines. Even a small ingestion of these can cause damage to your cat’s red blood cells, leading to anemia or even death.

These herbs can be found in many common dishes, and even in some pet food. If your cat is fed table scraps, it’s important to make sure that any onions or garlic in the dish have been cooked thoroughly before giving them to your pet.

Other Potentially Dangerous Herbs

In addition to members of the allium family, there are several other herbs that can be dangerous for cats. These include:

Juniper: This herb can be found in many pet foods, and can cause digestive issues for cats if eaten in large quantities.

Tea Tree Oil: Tea tree oil can be toxic to cats and can cause a wide range of issues, from irritation to respiratory problems.

Mint: While mint is generally safe for cats, large amounts can cause gastrointestinal distress.

Yarrow: This herb can cause vomiting and diarrhea in cats.

Herbs That Are Safe For Cats

While there are many herbs that can be dangerous for cats, there are also many that are safe and even beneficial. These include:

Catnip: Catnip is one of the most beloved herbs among cats, and is known to have a calming effect.

Valerian: Valerian is a sedative herb that can help cats relax and may even help reduce anxiety.

Fennel: Fennel is known for its digestive benefits, and can help cats with indigestion and nausea.

Chamomile: Chamomile is a soothing herb that can help cats with anxiety and stress.

When it comes to herbs, it’s important to know which ones are safe for cats and which ones are not. While some herbs, such as catnip and valerian, can be beneficial for cats, others, such as the allium family and tea tree oil, can be dangerous and even deadly. It’s always important to consult with your veterinarian before giving any herbs to your cat.

Is oregano toxic to cats?

Cats have a unique digestive system that makes them sensitive to certain types of foods and herbs. Oregano is commonly used in cooking, and it’s a popular herb in gardens around the world. But is oregano toxic to cats?

The simple answer is yes, oregano can be toxic to cats. It is high in both phenols and terpenoids, which cats can not properly digest due to a lack of glucuronyl transferase digestive enzymes in the liver. This can result in a toxic reaction and permanent liver damage to the cat.

What Is Oregano?

Oregano is a widely used culinary herb that can grow successfully in many climates. It is a member of the mint family and its scientific name is Origanum vulgare. It is native to the Mediterranean and is often used to flavor Italian dishes, as well as dishes from other regions.

Oregano is usually used dried, but it can also be used fresh in sauces, as a garnish, or as a flavoring for oils and vinegars. It has a strong, pungent flavor and aroma, and its taste can range from mild to sharp.

Oregano and Your Cat

Cats are sensitive to the compounds in oregano, particularly phenols and terpenoids. These compounds are toxic to cats, and can cause liver damage if ingested. Cats lack the enzyme glucuronyl transferase, which is necessary to break down these compounds.

Cats may not show signs of toxicity right away, but if they eat oregano regularly, the buildup of these compounds can cause serious health problems. Symptoms of oregano toxicity in cats may include vomiting, diarrhea, loss of appetite, lethargy, and jaundice.

How to Keep Your Cat Safe

If you have a cat, it’s important to keep oregano out of their reach. This means not leaving oregano in places where your cat can get to it, such as on the counter or near their food bowl.

It’s also important to keep oregano away from your cat’s litter box or other areas where they may be tempted to eat it. If you use oregano as a seasoning in your cooking, make sure to clean up any spilled herbs immediately.

Oregano is a popular herb that can be used to flavor many dishes, but it can be toxic to cats. Cats lack the enzyme needed to break down the compounds in oregano, and ingesting it can result in serious health problems. If you have a cat, it is important to keep oregano out of their reach and to clean up any spilled herbs immediately.

Is thyme harmful to cats?

Cats are curious animals, and sometimes their inquisitiveness can lead to potential danger. One of the questions that may arise when it comes to their wellbeing is whether thyme is harmful to cats.

Thyme is a type of herb that is often used to season food. It has a distinct, pungent aroma, and its flavor is both savory and slightly bitter. It is a common ingredient in many dishes, as its flavor is often enhanced when cooked.

The good news is that according to the ASPCA, thyme is classified as non-toxic for cats. This means that it is safe for your feline friend to consume in small amounts. However, it should be noted that some cats may experience an upset stomach after consuming thyme. If this occurs, it is best to stop feeding thyme to your cat immediately.

In addition to being safe for cats, thyme can actually be beneficial. This herb can be a good source of dietary fiber, antioxidants, Vitamins A and C, Riboflavin, Calcium, Iron, Magnesium, Copper, and Manganese for your pets. It is also thought to have anti-inflammatory and anti-bacterial properties that can help boost your cat’s immune system.

How to Feed Thyme Safely to Cats

If you would like to feed thyme to your cat, it is important to do so safely. It is best to start with a very small amount, as too much thyme can cause an upset stomach. Also, ensure that the thyme is fresh and not wilted or dried out.

When adding thyme to your cat’s diet, it is important to remember that cats are carnivores and should not be fed a vegetarian diet. You can mix small amounts of thyme with other meats or vegetables to provide your cat with a balanced meal.

It is also important to note that cats are attracted to the pungent odor of thyme. If your cat finds the smell of thyme too strong, you can try diluting it with water or adding it to other foods.

Other Ways to Incorporate Thyme into Your Cat’s Diet

In addition to adding thyme to your cat’s food, there are other ways to incorporate the herb into their diet. For example, you can give your cat a small amount of fresh thyme as a treat. You can also make homemade cat treats using fresh thyme as an ingredient.

You can also use thyme to make catnip tea. Simply steep one teaspoon of dried thyme in a cup of boiling water for five minutes, and then strain and cool the tea before giving it to your cat. Catnip tea can help relieve stress and anxiety, and it can also help ease stomach upset.

Thyme is generally safe for cats to consume, but it is important to do so in moderation. If your cat experiences an upset stomach after consuming thyme, it is best to stop feeding thyme to your cat immediately. In addition to adding thyme to your cat’s meals, there are other ways to incorporate the herb into their diet, such as making homemade cat treats or catnip tea. As long as you feed your cat thyme in moderation, you can rest assured that it is not harmful to them.

Is basil toxic to cats?

Cats are curious creatures and often love to chew on plants and other objects that they find lying around the house. This can lead to a lot of worry for pet owners, especially when it comes to the safety of household plants. One of the most common questions that pet owners have is, “Is basil toxic to cats?”

Basil: A Safe Herb for Cats

The good news is that basil is not toxic to cats. In fact, it’s one of the most widely grown herbs safe for cats. As any cat owner knows, they love to chew on whatever they can get their teeth on, and basil is a chewy leaf that is good for them.

Basil is not only safe for cats to eat, but it also provides many health benefits. Basil is high in nutrients such as vitamin C, vitamin A, and calcium. It also contains antioxidants that can help protect against free radicals and other toxins. Eating basil can also help to boost a cat’s immune system and provide a natural source of energy.

Benefits of Basil for Cats

In addition to being safe for cats, basil also offers several other benefits. For example, it can help with digestion and may even help to reduce symptoms of bloating and gas. It may also help to reduce inflammation in the body, which can be beneficial for cats that suffer from joint pain or arthritis.

Basil can also help to strengthen a cat’s immune system and help to protect them from illnesses and diseases. It can also be good for their skin and coat health, as it can help to reduce itching and irritation.

How to Give Basil to Cats

When giving basil to cats, it’s important to make sure that it is fresh and not dried. Dried basil is not as nutritious and can be hard for cats to digest. It’s also important to make sure that the basil is free of any pesticides or herbicides that may be harmful to cats.

It’s best to give cats basil in small amounts, as too much can cause an upset stomach. The best way to give cats basil is to mix it into their food or sprinkle it on top. You can also give cats fresh basil leaves, but it’s important to make sure that they are cut into small pieces so that they don’t choke.

Basil is a safe herb for cats and can provide many health benefits. It can help to boost their immune system, reduce inflammation, and improve digestion. However, it’s important to give cats basil in small amounts and make sure that it is fresh and free of any pesticides or herbicides. With the right care and preparation, cats can enjoy the many benefits of basil without any worries.

Is parsley harmful to cats?

Parsley is a popular herb commonly used in cooking. While humans may enjoy the flavor and health benefits of this herb, it is important to be aware that it can be harmful to cats. Parsley is a member of the Apiaceae family and can be toxic to cats, dogs, and horses if ingested in large quantities.

What is Parsley?

Parsley is a popular herb in many cuisines, with a bright, earthy flavor. It is an annual plant with bright green leaves and is available in both flat-leaf and curly-leaf varieties. Parsley is rich in vitamins and minerals like vitamin A, C, K, and folate. It also contains important antioxidants and anti-inflammatory compounds.

Is Parsley Toxic to Cats?

Unfortunately, parsley can be toxic to cats if ingested in large quantities. The ASPCA lists parsley as toxic to cats, dogs, and horses. Ingesting parsley can cause gastrointestinal upset and vomiting in cats. If a large amount is ingested, it can cause more serious side effects like difficulty breathing, low blood pressure, or seizures.

What Should I Do If My Cat Eats Parsley?

If your cat has eaten parsley, it is important to watch for signs of toxicity such as vomiting, diarrhea, or difficulty breathing. If you observe any of these symptoms, contact your veterinarian immediately. Your veterinarian may recommend monitoring your cat’s symptoms or may recommend treatment such as inducing vomiting or administering activated charcoal.

How Can I Keep My Cat Safe?

The best way to keep your cat safe from the potential toxicity of parsley is to keep it out of reach. Do not leave parsley in places where cats can access it, such as countertops or windowsills. If you are using parsley in cooking, make sure to store it away in a secure container when you are done.

Can Cats Eat Parsley?

Parsley can be safely eaten in small quantities by cats, but it should not be a significant part of their diet. If you do feed your cat parsley, make sure that it is fresh, not dried, and that it is given in moderation.

Parsley is a popular herb with many health benefits, but it can be toxic to cats if ingested in large quantities. It is important to keep parsley out of reach of cats and to monitor your cat for any signs of toxicity if it has eaten parsley. Parsley can be safely eaten in small quantities, but it should not be a significant part of your cat’s diet.

It is important to follow these guidelines to ensure the safety of your cat. If you have any questions about the potential toxicity of parsley for cats, it is best to contact your veterinarian for advice.

Is peppermint safe for cats?

Many cat owners are familiar with the smell of peppermint, or the flavor of peppermint-infused treats. But is peppermint safe for cats? While peppermint may have some benefits, it can also be dangerous for cats if ingested or if they come into contact with the essential oil.

Peppermint is a hybrid of watermint and spearmint and is a favorite flavoring for many people. It’s often used to make candy, tea, and other food items, and can also be found in many essential oils.

Is Peppermint Toxic for Cats?

The short answer is “yes”. While peppermint itself is not toxic for cats, the essential oil derived from peppermint can be harmful if ingested. Peppermint essential oil is made by distilling the leaves and flowers of the peppermint plant. This essential oil can be found in many products, like soaps, sprays, and candles, and can be toxic to cats if ingested.

In addition, cats can be sensitive to the scent of peppermint and other essential oils, and may experience respiratory irritation or skin irritation if exposed to these products.

The Potential Benefits of Peppermint for Cats

Despite the potential risks, peppermint can also have some benefits for cats. For example, peppermint essential oil has been used to help treat respiratory conditions, such as asthma, in cats. It can also be used to soothe digestive issues, such as nausea and stomach upset.

Peppermint oil can also be used to help repel fleas and other insects. However, it’s important to note that peppermint oil should never be applied directly to a cat’s skin, as it can be irritating. Instead, it should be diluted with a carrier oil and then applied to a bandana or collar that the cat can wear.

How to Safely Use Peppermint Around Cats

If you do decide to use peppermint around your cat, it’s important to do so safely. The most important thing is to keep peppermint essential oil, as well as other essential oils, away from your cat’s reach. This means not using peppermint oil in candles, sprays, or other products that may be accessible to your cat.

It’s also important to note that peppermint essential oil should never be applied directly to a cat’s skin or fur. Instead, it should be diluted with a carrier oil and then applied to a bandana or collar that the cat can wear.

If you’re looking for a way to use peppermint around your cat, try using a diffuser. A diffuser can help spread the scent of peppermint without the risk of direct contact or ingestion. Just make sure to keep the diffuser out of your cat’s reach.

In Conclusion

In summary, while peppermint can have some potential benefits for cats, it can also be dangerous if ingested or if they come into contact with the essential oil. If you do decide to use peppermint around your cat, it’s important to do so safely. Make sure to keep peppermint essential oil and other essential oils away from your cat’s reach, and never apply them directly to your cat’s skin or fur. Instead, use a diffuser to spread the scent without the risk of direct contact.

If you have any questions or concerns about using peppermint around your cat, it’s best to consult your veterinarian. They can provide you with more information and help you make a decision that’s best for your cat’s health and safety.


It is important to remember that cats are not naturally drawn to herbs and spices, so it is the responsibility of all cat owners to ensure that their furry friends stay away from these potentially dangerous items. If you own a cat, it is essential that you are aware of the risks associated with garlic, chives, onions, leeks, scallions, and shallots. Even a small ingestion of these can cause severe damage to your cat’s red blood cells, leading to anemia or even death. By being aware of the risk, you can keep your cat safe and healthy.

Owning a cat is a great responsibility, and it is our duty to keep them safe from potential dangers. As a pet owner, you should always research the safety of any herbs or spices before introducing them into your home. If you are unsure, the best course of action is to keep all members of the allium family away from your feline friend. By taking these simple precautions, you can ensure that your cat will remain safe and healthy for many years to come.

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