Pet safety
Is Hydrangea 'Nikko Blue' toxic to dogs?
Hydrangea macrophylla 'Nikko Blue'
Mildly. The ASPCA lists hydrangea 'nikko blue' as mildly toxic to dogs — a chewing dog typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. This classification follows the ASPCA Toxic and Non-Toxic Plant List. Hydrangea macrophylla is listed by the ASPCA as toxic to dogs, cats, and horses. All parts contain cyanogenic glycosides that can cause vomiting, diarrhoea, lethargy, and in large quantities more serious symptoms.
What to do if your dog ate hydrangea 'nikko blue'
- Remove any plant material from your dog's mouth and move hydrangea 'nikko blue' out of reach.
- Note how much was eaten and when, and watch for drooling, vomiting, or lethargy.
- Do not induce vomiting unless a vet or poison-control specialist instructs you to.
- Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice.
- Bring a leaf or photo of hydrangea 'nikko blue' to the appointment so it can be treated correctly.
General guidance, not veterinary advice. If you think your dog has eaten hydrangea 'nikko blue', contact your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 — do not wait for symptoms to worsen.
Is hydrangea 'nikko blue' toxic to dogs? — FAQ
Is hydrangea 'nikko blue' toxic to dogs?
Mildly. The ASPCA lists hydrangea 'nikko blue' as mildly toxic to dogs — a chewing dog typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. Hydrangea macrophylla is listed by the ASPCA as toxic to dogs, cats, and horses. All parts contain cyanogenic glycosides that can cause vomiting, diarrhoea, lethargy, and in large quantities more serious symptoms.
What are the symptoms if a dog eats hydrangea 'nikko blue'?
Hydrangea macrophylla is listed by the ASPCA as toxic to dogs, cats, and horses. All parts contain cyanogenic glycosides that can cause vomiting, diarrhoea, lethargy, and in large quantities more serious symptoms. Signs usually appear soon after chewing rather than hours later — watch for drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy after your dog has had access to hydrangea 'nikko blue'.
What should I do if my dog ate hydrangea 'nikko blue'?
Stay calm. Remove any plant from your dog's mouth and take the plant away. Note how much was eaten and when, and do not induce vomiting unless told to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice; a leaf or photo helps the vet treat it correctly.
Is hydrangea 'nikko blue' toxic to cats too?
The ASPCA classification Growli uses applies to both cats and dogs: Hydrangea 'Nikko Blue' is mildly toxic to cats as well. See the full hydrangea 'nikko blue' pet-safety guide for both species.
What is a dog-safe alternative to hydrangea 'nikko blue'?
For a similar look without the risk, see the best dogs-safe plants list — every plant there is ASPCA non-toxic to cats and dogs.
Full hydrangea 'nikko blue' pet-safety
- Is hydrangea 'nikko blue' toxic to cats and dogs? — the full guide for both pets
- Is hydrangea 'nikko blue' toxic to cats?
- My dog ate hydrangea 'nikko blue' — emergency steps
- Best dogs-safe plants — the full ASPCA non-toxic list
- Complete hydrangea 'nikko blue' care guide