5 Common Garden Hazards to Keep Away From Pets

Rachel M.
by Rachel M.

While gardens may seem like a safe space for pets to roam free, they can sometimes harbor surprising dangers that many pet parents overlook.


Whether you're planting a new bed of flowers or letting your dog sunbathe on the lawn, here are five garden hazards that could put your pets at risk.

Dogs in yard - image via Canva

1. Cocoa mulch

Cocoa mulch is prized for its rich color and sweet smell, but it's highly toxic to dogs and cats. Made from cocoa bean shells, this mulch contains theobromine and caffeine, the same compounds that make chocolate dangerous for pets.


Ingesting even small amounts can cause vomiting, diarrhea, rapid heart rate, seizures, or worse. If you’re looking for a pet-friendly alternative, opt for cedar, pine, or shredded leaves instead.

2. Slug and snail baits

Many gardeners use slug and snail baits to protect their leafy greens and flowers, but these products often contain metaldehyde, a highly toxic compound for pets. Just a teaspoon can be fatal to a small dog or cat.


Symptoms of poisoning include tremors, drooling, and seizures. If you’re facing a pest problem, try using pet-safe deterrents like diatomaceous earth, copper tape, or beer traps.

Slug - image via Canva

3. Compost piles

Composting is great for the environment, but not so great for your pets (if not managed carefully). As organic matter breaks down, it can produce mycotoxins, dangerous molds that can cause tremors and neurological issues if ingested.


Keep compost bins securely covered, and avoid putting dairy, meat, or moldy food scraps in the pile if pets have access to the area.

4. Fertilizers and soil additives

Fertilizers may help your plants grow, but they can wreak havoc on your pet’s digestive system. Organic fertilizers, often made from bone meal, blood meal, or fish emulsion, are especially tempting to curious pets due to their smell.


Ingesting these can lead to vomiting, pancreatitis, or even gastrointestinal blockages. Always store garden products out of reach, and keep pets off freshly treated soil until it’s safe.

Fertilizer - image via Canva

5. Toxic ornamental plants

You might love the look of lilies, azaleas, or foxgloves, but many common garden plants are toxic to pets. For example, all parts of the lily plant are highly toxic to cats, and even small exposures can lead to kidney failure.


The same goes for sago palms, oleander, and daffodils. Before planting anything new, check whether it’s listed as pet-safe by the ASPCA or consult with your vet

Final thoughts

Our gardens are a wonderful space for both humans and pets to enjoy, but a little vigilance goes a long way. Being aware of these lesser-known hazards can help you keep your green space both beautiful and safe. When in doubt, always supervise your pet in the yard and consider fencing off higher risk areas.  


Join the PetGuide community. Get the latest pet news and product recommendations by subscribing to our newsletter here.

Rachel M.
Rachel M.

More by Rachel M.

Next