Common Toxic Plants for Pets Found in New Zealand Backyards

Why plant toxicity is a common emergency

Pets chew plants out of curiosity, boredom, or while grazing. Toxicity risk depends on the plant species, the amount eaten, and the pet’s size and health. If you suspect ingestion, treat it as time-sensitive.

High-risk plants commonly encountered

This list focuses on plants widely recognised as toxic in veterinary references. Exact risk varies.

Lilies (cats)

Many lily species are highly toxic to cats. Exposure can be through chewing leaves/flowers or grooming pollen from fur.

Common early signs:

• vomiting
• lethargy
• reduced appetite

Sago palm

Highly toxic; ingestion can cause severe liver injury.

Signs may include:

• vomiting, diarrhoea
• weakness
• jaundice (yellow gums/eyes)

Oleander

Contains cardiac glycosides that can affect heart rhythm.

Daffodils and tulips

Bulbs are often more toxic than leaves; gastrointestinal signs are common.

Azalea / rhododendron

Can cause gastrointestinal and cardiovascular effects.

Karaka berries (dogs)

In NZ, karaka berries/seeds are a known seasonal risk in some areas.

Wandering Jew (contact irritation in dogs)

Often causes contact dermatitis rather than ingestion toxicity.

What to do immediately if you suspect exposure

1. Remove access to the plant and prevent further chewing. 2. Do not induce vomiting unless a veterinarian instructs you to. 3. Take a photo of the plant and, if safe, bring a sample. 4. Call your vet or an emergency clinic immediately for guidance. 5. Monitor breathing, gum colour, and alertness while preparing to travel.

Symptoms that warrant urgent emergency care

• difficulty breathing or collapse
• seizures, severe tremors, profound weakness
• repeated vomiting or bloody diarrhoea
• pale/blue gums
• suspected lily exposure in a cat

Prevention: practical backyard risk reduction

• identify plants in your yard and remove or fence off high-risk species
• prevent boredom grazing: provide enrichment and structured exercise
• supervise puppies and young dogs outdoors
• keep compost and garden chemicals secured