Is Onion Grass Bad For Dogs

Is Onion Grass Bad For Dogs?

Last Updated: August 18, 2023
correct answerThe Short Answer is:

Any form of onion for that matter, including onion grass, should not be fed to dogs. As a result, you should avoid preparing your pet’s food with these items. It is also important to be aware when letting your pet play on your lawn, especially if you have onion grasses growing nearby.

In this article you will know the answer to the query “Is Onion Grass Bad For Dogs?“.

The majority of dog owners share their food with their pet dogs even though there are high-quality dog foods available.

Is Onion Grass Bad For Dogs

While some people may give leftovers others may prepare more food to provide something for their pets at home. The act may be altruistic but may negatively impact the health of a dog.

Historically dogs were strictly carnivorous. In recent years domesticated dogs have become omnivorous.

Vegetables fruits grains and meat can all be given to your dog and it will be happy. Its not just your friends who enjoy the abundance of delicious food at parties but your dogs are also thrilled.

While some human foods may be good for dogs others may not.

Now that dog owners should be aware of the foods that may be harmful to their dogs they should screen out what to give their dogs.

It is common for dogs to eat everything they are given. Dogs are indiscriminate eaters and only a small number of human foods are offensive to them.

Herbs are used to spice up our food. Onions are one of the worlds most commonly used spices. What if you knew that onions should not be included in a dogs diet?

What Makes Onion Grass Harmful to Dogs?

There is no plant in the genus Allium that is not harmful to dogs.

Garlic onion shallots spring onions Welsh onions chives leeks and Chinese onions are among these plants.

Dogs are poisoned by all parts of these plants from roots to leaves and flowers.

If you have a dog that forages on onion grasses near your home you should warn it against doing so.

Dogs’ red blood cells may become unhealthy and fragile if their red blood cells are exposed to disulfide and thiosulfate compounds found in allium plants.

The affected RBCs can rupture in the worst cases leading to hemolytic anemia methemoglobinemia and hemolytic anemia with Heinzs body.

It is easy to tell if a dog has these conditions if it looks and feels tired because its muscles and organs are not getting enough oxygen and nutrients.

Leaving these conditions untreated can result in death for your dear furry baby.

Do Onion Grasses Have the Same Threat to a Dog’s Health as Cultivated Onions?

Wild garlic also known as onion grass belongs to the genus Allium. As it can spread in your lawn through bulbs and seeds it is considered a perennial lawn weed.

They are hard to control and thrive year-round. Grass onions are edible and can be used in the same way as other onion species.

As a dog can forage anything on your lawn onion grass can be consumed by them.

Even though you may have cut the weeds dogs love digging and can eat the bulbs. Onion grass can also be ingested if it is added to food as a spice.

It contains disulfide and thiosulfate two compounds that are toxic to dogs just like other onions.

What Are Signs That a Dog Has Ingested Much Onion?

Unless your dog consumes large quantities of onions it may be difficult to differentiate onion poisoning from other conditions in dogs.

A dog suffering from onion poisoning may exhibit symptoms like weakness lethargy nausea and abdominal pain.

When a dog drools a lot and hunches over it is experiencing nausea and abdominal pain.

The most noticeable symptoms include bad breath vomiting diarrhea red-tinged urine increased respiratory rate and pale gums.

When your dog becomes intolerant to your usual exercises you may suspect poisoning. When the poison has penetrated most of the body a dog may collapse suddenly.

What Should You Do if You Suspect an Onion Poisoning of Your Dog?

Perhaps there isnot much that you can do. When you see some of the symptoms call the vet and drive your dog to an emergency veterinary hospital right away. There will be procedures to induce vomiting at the veterinary hospital and monitoring of anemia will begin.

Depending on how much onion your dog has eaten the prognosis may differ. As of today there is no antidote for onion poisoning.

How Much Onion Is Considered as Dangerous to Your Dog?

There is a wide range of tolerance for onion poisoning among dogs. With only a small amount of onion ingested some dogs show signs of poisoning.

Other dogs on the other hand may need to consume a large amount of onion before they show any signs of poisoning. It is also possible to become poisoned by onions by eating small amounts of them repeatedly over time.

Is Powder Onion Also Dangerous to Dogs?

The health of your dog is adversely affected by all forms of onion.

Onions raw or cooked fresh or processed powdered or flaked solid or extract are all toxic and can lead to onion poisoning.

Furthermore the onion plant contains disulfide and thiosulfate compounds that make dogs’ red blood cells fragile.

What Are Common Human Foods That Have High Onion Content?

The popularity of fried onion rings and onion rolls is undeniable. Obviously onions are the main ingredient in these old-fashioned favorites. Despite the disheartening fact that you can not share some of them with your drooling dog the best way is to give your dog another snack to occupy him or her while you enjoy the fried onion rings or onion rolls.

Garlic and onion enhance many dishes as well. Adding a lot of these spices to meat and fish broths will enhance their taste. You should not give your dog any broth if this is the case. However if you can not resist your dogs begging eyes dilute the broth with more water. This will satisfy your dog while reducing the onion content to a very low level.

What Snacks Should You Not Share with Your Dog?

Donot eat tortilla chips in front of your dog if you love munching on them. You may want to give them to him. Read the label of the commercially prepared snacks you intend to share with your dog to be sure they do not have onion flavoring. There is a lot of onion and garlic flavor in Nacho Cheese and Cool Ranch so do not give it to your begging dog.

How Can You Prevent Your Dog from Eating Onion?

Onion-containing foods are especially appealing to dogs due to their distinctive taste and aroma. Once a dog has had a chance to eat them he may gobble them up. It is important that you know what recipes you prepare at home in which you use onion as a spice and you should never share your dog with them. Make sure leftovers are stored in a secure place. Your dog should not be allowed access to any onion supplements powders extracts or pots containing onion plants. You should also educate your family about the hazards of onions to your dogs health.

What Should You Do With All the Onion Grasses on Your Lawn?

The onion grass is a perennial weed that even survives the winter. When they establish themselves in your lawn they are easy to spread and can cause your dog to consume onions. You may have difficulty getting rid of them.

It may be too labor-intensive to dig each onion grass from the soil individually when it has become widespread on your lawn. You may not be able to kill them all with herbicides. Worst case scenario a mower may have to be used followed by the removal of any plant remains. If there are lots of onion grasses outside your property you may have to fence it in so that your dog does not get out and forage on them.

You can also prevent your dog from setting foot on your lawn by not letting it. Doing so will definitely upset your furry friend.

What Are Other Human Foods That Are Bad for Dogs?

There are a number of human foods that can be harmful to dogs including chocolate cooked bones dairy products raisins or grapes apple cores salty and fatty foods caffeine and Macadamia nuts.

The possibility of your pet dog dying if he consumes large quantities of these human foods is the worst-case scenario.

Onion poisoning may be more common in certain dog breeds. In the case of Shiba Inus and Akitas you may have to pay extra attention to the amount of onion in their food as these breeds are very susceptible to onion poisoning.

It is important that your entire family understands the importance of feeding your dog the right food. Even the most meticulous preparation can be ruined by a family member who does not know dogs should not eat certain foods. Keep in mind that not being very generous with your dogs food does not mean you are inconsiderate and cruel but it is an excellent way to ensure its health.


Any form of onion for that matter including onion grass should not be fed to dogs. As a result you should avoid preparing your pets food with these items. It is also important to be aware when letting your pet play on your lawn especially if you have onion grasses growing nearby. 

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Amanda Dogs Trainer

Amanda (Author)

With over a decade of experience, Amanda is a distinguished dog trainer. Her expertise in canine behavior has transformed countless lives, fostering harmonious human-canine connections. Through compassionate and personalized approaches, she empowers owners to understand and connect with their furry companions, creating a legacy of joyful tails and transformed lives.

Osvaldo Maciel Dogs Trainer

Osvaldo Maciel (Content Reviewer)

Osvaldo Maciel, a stalwart in the field with 14 years of experience, is a revered dog trainer. His journey is defined by a profound understanding of canine behavior, shaping unbreakable human-canine bonds. Osvaldo guides owners to connect with their beloved pets, leaving an indelible mark of happiness and transformation. His legacy shines through the countless lives he has touched.

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