With April’s showers bringing May flowers, we have dedicated this article to learning about  flowers to avoid to keep your pets safe.

Flowers may add beauty and fragrance to your home or garden, but many popular varieties can be dangerous—or even deadly—to dogs and cats. Whether you’re planning a floral arrangement, planting a garden, or receiving a bouquet, it’s important to know which flowers to avoid if you have pets. Below is a detailed list of common toxic flowers and the risks they pose to your furry companions.

1. Lilies (Lilium and Hemerocallis species)

Lilies are perhaps the most dangerous flowers for cats. Even a small amount—like pollen on a cat’s fur—can cause acute kidney failure if ingested. The most toxic types include:

  • Easter Lily

  • Tiger Lily

  • Day Lily

  • Asiatic Lily

  • Stargazer Lily

While lilies are most dangerous for cats, some varieties can also cause gastrointestinal distress in dogs. If you suspect your cat has come into contact with a lily, seek emergency veterinary care immediately.

2. Tulips and Hyacinths

These popular spring flowers contain toxins called tulipalin A and B, which are concentrated in the bulb. Ingesting them can lead to drooling, vomiting, diarrhea, and, in more severe cases, heart and respiratory problems. Both cats and dogs are affected by these toxins, especially if they dig up and chew on the bulbs.

3. Daffodils

Daffodils (Narcissus species) contain lycorine, a chemical that can cause intense vomiting, diarrhea, and abdominal pain. Like tulips, the highest concentration of toxins is found in the bulb. In some cases, ingestion may also lead to low blood pressure or seizures.

4. Chrysanthemums

Also known as mums, these common garden and bouquet flowers contain pyrethrins, which can cause drooling, vomiting, diarrhea, and incoordination. While generally less severe than lilies or daffodils, mums should still be avoided if you have curious pets.

5. Azaleas and Rhododendrons

Both of these shrubs contain grayanotoxins, which interfere with normal muscle function. Even small amounts can cause serious symptoms like vomiting, diarrhea, excessive drooling, abnormal heart rate, and potentially fatal cardiac issues if left untreated.

6. Oleander

Though less common in floral arrangements, oleander is highly toxic and can be fatal. All parts of the plant contain cardiac glycosides, which can disrupt heart function and lead to vomiting, lethargy, and death in severe cases.

7. Peonies

Peonies are a favorite in wedding bouquets and spring gardens, but they contain paeonol, which can cause vomiting and diarrhea in pets if ingested.

Safe Alternatives

If you want pet-safe flowers, consider these non-toxic options:

  • Roses (true roses, not look-alikes)

  • Sunflowers

  • Snapdragons

  • Marigolds

  • Zinnias

Always verify with your vet or consult the ASPCA’s toxic and non-toxic plant database if you’re unsure about a flower’s safety.


While flowers bring beauty into our lives, pet owners must be cautious about the varieties they choose. Keeping your home and garden free of these toxic flowers can prevent accidental poisoning and ensure a safe, happy environment for your pets.