Where can I find out about plants that might be poisonous for my pets?

The following links provide useful information:

• The Australian Animal Poisons Helpline provides information on substances that can be toxic to pets, including plants. They are a registered animal charity and provide a free service to pet owners including rapid up-to-date first-aid advice, risk assessment and triage recommendations to pet owners who may be dealing with a poisoned animal.
• The CSIRO published an eBook in May 2020 by veterinary toxicologist Dr Ross McKenzie ‘Australia’s Poisonous Plants, Fungi and Cyanobacteria, A Guide to Species of Medical and Veterinary Importance’. This resource provides detailed information on poisonous plant species, fungi and cyanobacteria found in Australia, including their identification and known toxic effects on animals and humans.
• Animal Emergency Service (AES), an Australian emergency veterinary provider, offers a guide to flowers and plants that can be toxic to pets, including information on some of the potential signs and effects of poisoning. 
• State-based resources can also be helpful. For example, Agriculture Victoria provides information on toxic plants for both dogs and cats, including common plants that may pose a risk and the potential signs of poisoning.
• The University of Illinois Veterinary Medicine Library shares a handy database of plants toxic to animals. This includes photos and detailed descriptions of the effects of the plants on animals, both small and large domesticated species. While this resource is not Australia-specific, much of the information on plant toxicity has broader relevance.   
• Cornell University has developed an extensive Poisonous Plants database. It is searchable by botanical or common plant names and lists the types of animals affected, including livestock. While this resource is not Australia-specific, it provides useful information on plant toxicity that may have broader relevance. 

Lilies

All parts of the plant are highly toxic to cats and mildly toxic to dogs. A tiny amount ingested by a cat can result in kidney failure within 12-36 hours – seek veterinary care as soon as possible.

Scientific Names: Lilium, Hemerocallis

Common Names: Asiatic, Easter, Japanese Show, Rubrum, Stargazer, Red, Tiger, Western, Wood, Day

Toxin: unknown

Signs: vomiting, diarrhoea, abdominal pain, deceased appetite, lethargy, excessive thirst