Toxic to cats:
Almond
Aloe Vera
Amaryllis
Apple seeds
Apricot pits
Aspargus Fern
Avacado, fruit and pit
Azalea
Baby's Breath
Black Eyed Susan
Burning Bush
Mums
Daffodil
Easter Lily, Very Toxic
Eggplant
Morning Glory
Mushrooms
Lily of the Valley
Peony
Pointsettia
Potato
Primrose
Poppy
Sweet Pea
Tomato Plant, green fruit, stems and leaves
Tulip
Try to avoid planting any of these in your yard if your cat goes outside. Also keep the above houseplants out of your cats reach.
It will save you and your cat alot of problems!
Please see www.cfainc.org/atricles/plants for a more complete list.