Poisonous and non toxic plants for cats

Dog and cat articles - on Pets.ca

Good plants and Toxic Plants for Cats

Good plants - These are all common houseplants that are non-toxic to cats.

Toxic plants - These plants are toxic to cats. If your cat eats one of these, rush it to the veterinarian immediately.

African violet (Saintpaulia)
Aluminum plant
Any of the true ferns (Boston fern, maidenhair, etc.)
Cacti (but make sure they are real cacti, not just a succulent)
Catnip
Coleus
Common geranium (Pelargonium)
Gloxinia (Sinningia)
Goldfish plant (Hypoestes)
Grape ivy (Cissus)
Hanging African Violet (Episcia)
Lipstick vine (Aeschynanthus)
Miniature roses
Pepperomia
Prayer plant (Maranta)
Shrimp plant (Beleperone guttata)
Spider plant (Chlorophytum)
Swedish Ivy (Plectranthus)
Sweet potatoes (Ipomoea)
Variegated philodendron leaf peperomia
Wandering jew (Zebrina)
Wax begonias (Begonia semperflorens)

Aloe Vera
Arrowhead Vine (all parts)
Asparagus Fern
Azalea
Bird of Paradise (fruit, seeds)
Boston Ivy (all parts)
Caladium (all parts)
Calla Lily
Christmas Rose
Chrysanthemum
Creeping Charlie (all parts)
Creeping Fig
Crown of Thorns
Daffodil
Dieffenbachia
Dumbcane (all parts)
Easter lily
Elephant Ears
Emerald Duke (all parts)
English Holly
English and Glacier Ivy (leaves, berries)
Heartleaf (all parts)
Ivy (Hedera)
Jerusalem Cherry
Lily of the Valley (all parts)
Majesty (all parts)
Marble Queen (all parts)
Mistletoe
Nephthytis (all parts)
Parlor Ivy (all parts)
Philodendron (all parts)
Poinsettia (leaves, flowers)
Pothos (all parts)
Pot Mum
Red Princess (all parts)
Saddleleaf (all parts)
Schefflera
Spider Mum
Sprengeri Fern
Swiss Cheese Plant
Tulip (bulbs)
Umbrella Plant (all parts)
Weeping Fig (Ficus)

If you suspect your cat has eaten a toxic plant, rush it to a vet immediately. Don't wait for symptoms to appear. Some symptoms of poisoning include; vomiting, seizures, foaming, and coma.
A good tip is to keep all plants away from cats except really safe plants like catnip and wheat grass.

N.B. This list is not exhaustive. Consult your vet or nursery for plants not on this list.