Laburnum bark flowers seeds and leaves, Larkspur Stems, Lily of the Valley Leaves and Flowers, Locoweed, Lupine Stems and Flowers.
Macadamia Nut, Madagascar Dragon Tree, Marble Queen, Marijuana, Mexican Breadfruit, Miniature Croton, Mistletoe Berries (very poisonous), Morning Glory, Mother-in-Law's Tongue, Mountain Laurel, Mushrooms- any that you can not identify as safe.
Narcissus, Needlepoint Ivy, Nephthytis, Nightshade, Norfolk Pine.
Oleander (bark stems and leaves) (very dangerous), Onion, Oriental Lily (especially cats).
Peace Lily, Peach (wilting leaves and pits), Peaches, Pencil Cactus, Philodendron, Plumosa Fern, Poinsettia (low toxicity), Poison Ivy, Poison Oak, Pokeweed, Potatoes Peelings(raw), Pothos, Precatory Bean, Primrose (Primula),
Privet Bush Stems and Leaves.
Red Emerald, Red Lily (especially cats), Red Princess, Rhododendron & Leaves, Rhubarb (leaves), Ribbon Plant, Rubrum Lily (especially cats).
Sago Palm, Satin Pothos, Schefflera, Silver Pothos, Skunk Cabbage (leaves and flowers), Stargazer Lily (especially cats), String of Pearls/Beads, Sweet Pea, Sweetheart Ivy, Swiss Cheese Plant.
Taro Vine, Tiger Lily (especially cats), Tomato Plant (green fruit stem & leaves), Tomatoes Vines, Tulips.
Variegated Rubber Plant, Virginia Creeper (bark and stems).
Wandering Jew, Weeping Fig, Western Lily (especially cats), Wisteria (bark and leaves), Wood Lily (especially cats).
Yesterday Today and Tomorrow, Yew Bark Needles and Seeds (very dangerous), Yucca.