10 garden plants that are dangerous to dogs [with photos]
Ready to plant an outdoor garden but unsure which garden plants are dangerous to dogs? Are you wondering whether azaleas are poisonous for dogs? Tulips? Before you grab your garden trowel, read what integrative veterinarian Dr. Julie Buzby has dug up on 10 outdoor plants that are dangerous to dogs. Spoiler alert: Azaleas, lily of the valley, and tulips are just a few of the garden plants that are harmful to dogs.
Some common plants that are popular choices for many gardeners can be potentially poisonous for our canine companions. But which ones? To help you plan ahead and keep your dog safe, I’ve put together this list of 10 common garden plants that are dangerous to dogs. (Plants are listed in alphabetical order.)
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You’ll learn what each garden plant looks like, the signs and symptoms of poisoning in dogs for each outdoor plant, and what to do if your dog ingests a toxic plant. Help is here!
Let’s get started.
Autumn Crocus Toxicity Scale for Dogs: HIGH
There are many species of crocus, but the most dangerous species for dogs is the Autumn Crocus, Colchicum autumnale. The plant is originally from the Mediterranean and Asia.
The whole plant is poisonous to dogs, but the highest concentration of the toxin is found in the bulbs. Colchicine, the toxic agent in the plant, is highly toxic and can cause death with as little as 0.8 milligrams per kilogram.
A dog’s symptoms caused by colchicine include:
Toxin Trivia: Colchicine, the toxic agent in the Autumn Crocus, has been used for centuries to treat gout in humans.
Azalea Toxicity Scale for Dogs: HIGH
Are azaleas poisonous to dogs? Yes.
There are over 250 species of Azalea (Rhododendron spp.) found throughout North America. Despite their beautiful showy flowers that can bloom any time from the spring through the fall, azaleas are popular outdoor plants that are highly toxic to dogs.
Symptoms can occur when a dog has eaten as little as 0.2% of his or her body weight. Grayanotoxins in azaleas primarily affect the dog’s heart and intestinal tract.
Symptoms of poisoning in dogs from azaleas include:
Toxin Trivia: Bees that feed on azalea can transfer the toxins from the plant to the honey, sometimes known as “mad honey.” The contaminated honey can cause vomiting, slow and abnormal heart rates, and weakness in people.
Chrysanthemum Toxicity Scale for Dogs: LOW
Are chrysanthemums poisonous to dogs? The good news is that chrysanthemums have a relatively low risk of fatal toxicity compared with other toxic plants on this list. However, while chrysanthemums are less toxic to dogs than some garden plants, they are still a plant that is poisonous to dogs.
Chrysanthemum (Chrysanthemum spp.) are beautiful flowering plants that are originally native to Asia. The toxic components of the plants include sesquiterpene, lactones, and pyrethrins.
Signs of toxicity in dogs from the chrysanthemum can include:
Toxin Trivia: Pyrethrins are used as flea preventatives and derived from the flowers of the plant, while pyrethroids are the synthetic version of the compound naturally found in the plants. Dogs are more tolerant of pyrethrins than cats, and pyrethrin flea and tick preventatives can be used safely in dogs.
Daffodil Toxicity Scale for Dogs: MILD TO MODERATE
Daffodils are probably one of the most recognizable signs that spring is on the way. Interestingly, most of the toxic components, such as lycorine, other alkaloids, and calcium oxalates are found in the bulb of the plant.
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Daffodil toxicity is generally mild to moderate compared with other species on this list of outdoor plants that are poisonous to dogs.
Signs of toxicity in dogs from daffodil include:
Toxin Trivia: Daffodils were first cultivated by the ancient Romans.
English Ivy Toxicity Scale: MILD TO MODERATE
English Ivy (Hedera helix) is sometimes kept as a houseplant. But it is probably most recognized for how it climbs up the sides of older buildings on colleges and historic homes. The toxic components of the plant, triterpenoid saponins, cause irritation of the mouth and intestinal tract.
Ivy has relatively mild to moderate effects compared with other toxic plants on this list, and the leaves contain more of the toxins than the berries.
Signs of toxicity in dogs from English Ivy may include:
Toxin Trivia: Because English Ivy is an invasive species in the United States, sale of the plant is banned in Oregon.
Lily of the Valley Toxicity Scale for Dogs: MODERATE TO SEVERE
The toxins in the lily of the valley plant are very potent and can be deadly for dogs.
Lily of the Valley (Convallaria majalis) is well known for its delicate, white flowers. Despite their seemingly innocent appearance, they contain deadly cardiac glycosides that work by affecting the electrical activity of the dog’s heart.
This can lead to signs of poisoning in dogs from lily of the valley such as:
Toxin Trivia: Lily of the valley is the national flower of Finland.
Oleander Toxicity Level for Dogs: MODERATE to SEVERE
Oleander (Nerium oleander) was originally native to Northwest Africa and Southeast Asia, but now grows wild in some of the Southwestern parts of the United States including Arizona, California, and Texas. Like lily of the valley, the toxic components of oleander are known as cardiac glycosides.
Signs of oleander plant toxicity in dogs include:
Toxin Trivia: The toxic dose of oleander in horses and cows is only 0.005% of their body weight.
Sago Palm Toxicity Scale for Dogs: HIGH
Sago Palms (Cycas revoluta) contain a highly toxic agent known as cycasin. The molecule is found in the highest concentration in the seeds, but is found throughout the plant, too. Cycasin is broken down in the dog’s gut and causes significant damage to the liver.
Signs of toxicity such as vomiting, diarrhea, and drooling can be seen anywhere from 15 minutes to a couple of hours after ingestion of the sago palm by a dog.
Also, liver failure can occur two to three days after a dog ingests some of the sago palm. The liver failure may appear as vomiting, diarrhea, yellow appearance to the skin, fluid build up in the abdomen and neurological signs such as weakness and imbalance (i.e. a wobbly and off balance dog). Sago palms are a common garden plant and they are highly toxic to dogs.
Toxin Trivia: Although the sago palm superficially looks like a palm tree, it is not actually in the palm family. Palm trees are in the family Arecaceae, while sago palms are in the family Cycadaceae.
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Tulip Toxicity Scale for Dogs: MILD TO MODERATE
Next, let’s look at two types of beautiful bulb flowers—the tulip and the hyacinth. Tulips (Tulipa spp.) and Hyacinth (Hyacinthus spp.) are two popular bulb species that both contain a similar toxin. Alkaloids are located in the highest concentration in the bulbs.
Hyacinth Toxicity Scale for Dogs: MILD TO MODERATE
Typical signs of toxicity in dogs from ingesting tulips or hyacinth include:
Toxin Trivia: Hyacinth are in the same family as asparagus, though we don’t recommend eating them!
Yew Toxicity Scale for Dogs: HIGH
There are many species of yew, but the most toxic species to dogs are Japanese yew (Taxus cuspidate), English yew (Taxus baccata), and Chinese yew (Taxus chinensis). They are a popular shrub for landscaping due to the fact that they are evergreen and tolerant to winter. The toxic agents, Taxine A and B, are toxic to the dog’s heart.
It only takes a small amount of exposure, such as a dog chewing on a Yew branch, to cause signs of poisoning including:
Thankfully, due to the bitter nature of yew, poisoning in dogs is rare.
Toxin Trivia: Taxol (paclitaxel), a chemotherapeutic medication used to treat cancer in humans, was originally derived from the Pacific Yew tree.
Lilly Toxicity Scale for CATS: HIGHLY toxic to cats
Even though dogs are the focus of this article, we cannot neglect our feline friends. Lilies are highly toxic to cats, to the point where even grooming pollen from the fur or drinking water out of a vase that holds lilies can cause kidney failure. Signs typically occur within 6 to 12 hours after exposure and include lethargy, decreased appetite, vomiting, diarrhea, changes in urination (either increased urination or no urine production), kidney failure, and some cats may show signs such as imbalance, head pressing, and seizures.
Next, let’s looks at what steps to take if you think your dog may have ingested a toxic garden plant.
If you think your dog ate a poisonous garden plant, don’t panic. Follow these three steps:
First, contact your veterinarian and/or animal poison control. The ASPCA Poison Control (1-888-426-4435) and the Pet Poison Helpline (1-855-764-7661) have expert help available 24/7. (Note: There is a consult fee for these services.)
Grab your cell phone and take pictures of BOTH the plant and the label on the plant’s container—if the plant is still in its original container. This will greatly help with identification.
For most toxicity cases, it is better to seek help and start treatment early instead of waiting to see what happens. Also, you can be prepared by knowing what to expect if you need an emergency vet visit for your dog.
If you are debating which plants are safe for your garden, the ASPCA Poison Control has a helpful website for identifying a wide variety of toxic and nontoxic plants. For an entire list of garden plants dangerous to dogs as well as a list of plants that are safe for dogs, see the ASPCA’s article: Toxic and Nontoxic Plants.
As your dog’s biggest advocate, you work hard to give your dog the best life possible. You protect your canine companion inside your home by keeping xylitol, chocolate, and even human toothpaste out of reach. Now you can protect your dog from common garden plants that may be outside your own home.
Finally, as summer heats up, please keep your dog safe from another outdoor danger—blue green algae. It’s a toxin that may be lurking in lakes, ponds, or even small garden ponds set as landscaping in yards or patios. Blue green algae and dogs are a deadly combination.
By educating and informing yourself about outdoor plants that are dangerous for dogs, you can enjoy your garden and the outdoors…and your dog can, too.
I’d love to hear. Please comment below.
Sources:
Source: https://gardencourte.com
Categories: Outdoor
This post was last modified on 13/10/2023 08:43
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