Toxic
Acokanthera - all parts are toxic except the ripe fruit
Amaryllis - all parts are toxic
Andromeda - all parts are toxic
Angel's Trumpet - seeds, leaves, and flowers are toxic
Apricot - pits, leaves, and bark are toxic
Apple - seeds are toxic, the branches, leaves are OK if NOT sprayed with pesticides
Arum Lily - all parts are toxic
Australian Flame Tree - all parts are toxic
Autumn Crocus - all parts are toxic
Avocado - pits, unripe fruit, leaves, and stems are toxic
Azalea - all parts are toxic
Toxic
Balsam Pear - all parts are toxic
Baneberry - all parts are toxic
Belladonna - all parts are toxic
Bird of Paradise - seed pods and flowers are toxic
Bishop's Weed - all parts are toxic
Bitter Melon - all parts are toxic
Bittersweet - all parts are toxic
Black Garden (Nightshade) - unripe berries and leaves are toxic
Black Laurel - all parts are toxic
Black Locust - all parts are toxic
Bleeding Heart - all parts are toxic
Bloodroot - all parts are toxic
Blue Bonnet - all parts are toxic
Blue-Green Algae - all parts are toxic
Boston Ivy - all parts are toxic
Boxwood - all parts are toxic
Bracken Fern - all parts are toxic
Buckthorn - all parts are toxic
Burdock - all parts are toxic
Buttercup - all parts are toxic
Broad Bean - all parts are toxic
Broom Grass - all parts are toxic
Toxic
Cacao - all parts are toxic
Caladium - all parts are toxic
Calla Lily - all parts are toxic
Camel Bush - all parts are toxic
Cana Lily - all parts are toxic
Candelabra - all parts are toxic
Cardinal Flower - all parts are toxic
Castor Bean - all parts are toxic
Catclaw Acacia - twigs and leaves are toxic
Chalice - all parts are toxic are toxic
Cherry - pits, leaves, and bark are toxic
Cherry Nightshade - unripe berries and leaves are toxic
Chinaberry - all parts are toxic
Christmas Candle - all parts are toxic
Clematis - all parts are toxic
Cocklebur - all parts are toxic
Coral Plant - all parts are toxic
Coriander - all parts are toxic
Corn Grass - all parts are toxic
Corncockle - all parts are toxic
Coyotillo - all parts are toxic
Cowslip - all parts are toxic
Crocus (Autumn) - all parts are toxic
Crotalaria - all parts are toxic
Crown of Thorns - all parts are toxic
Cuckoopint - all parts are toxic
Cutleaf Philodendron - all parts are toxic
Cycad - all parts are toxic
Non-Toxic
California Holly
Calamint
Calendula
Camellia
Chamomile
Chickweed
Chicory
Cissus Kangaroo Vines
Claw Cactus
Coffee Tree - the coffee beverage is toxic
Coleus
Comfrey
Corn Plant
Cottonwood
Crabapple - fruit only
Creeping Jenny
Croton - house variety
-D-
Toxic
Daffodil - all parts are toxic
Daphne - all parts are toxic
Deadly Nightshade - unripe berries and leaves are toxic
Death Camas - all parts are toxic
Delphinium - all parts are toxic
Devil's Ivy - all parts are toxic
Dieffenbachia (Dumb Cane) - all parts are toxic
Dock - all parts are toxic
Dumb Cane - all parts are toxic
Dutchman's Breeches - all parts are toxic
Non-Toxic
Dahlia
Dandelion
Date
Daylily
Dill
Dish
Dogwood
Donkey Tail
Dracaena
Dragon Tree
-E-
Toxic
Eggplant - unripe/overipe fruit and leaves are toxic
Elderberry - roots, leaves, stems, and bark are toxic
Elephant's Ears - all parts are toxic
English Ivy - all parts are toxic
Ergot - all parts are toxic
Euonymus - filit, leaves, and bark are toxic
European Pennyroyal - all parts are toxic
Non-Toxic
Easter Cactus
Echeveria
Elephant Foot Tree
Elderberry - cooked, ripe fruit only
Elk's Horn
Elm
Eucalyptus
Eugenia
European Fan
-F-
Toxic
False Hellebore - all parts are toxic
Fava Bean - all parts are toxic
Felt Plant - all parts are toxic
Figs - sap is toxic
Fire Thorn - all parts are toxic
Flame Tree - all parts are toxic
Four o'clock - all parts are toxic
Foxglove - all parts are toxic
Non-Toxic
Fir
-G-
Toxic
Glory Bean - all parts are toxic
Glottidium - all parts are toxic
Golden Chain - all parts are toxic
Grass (Broom, Corn, Johnson, Sorghum, and Sudan) - all parts are toxic
Ground Cherry - all parts are toxic
Toxic
Heath (Andromeda, Azalea, Black Laurel, Kalmia, Leucotho, Mountain Laurel, Peires, and Rododendron) - all parts are toxic
Hemlock (Poison and Water) - all parts are toxic
Heliotrope - leaves are toxic
Hemp - all parts are toxic
Henbane - all parts are toxic
Holly - berries and leaves are toxic
Honey Locust - all parts are toxic
Horse Bean - all parts are toxic
Horse Chestnut - all parts are toxic
Horse Nettle - all parts are toxic
Horse Tail - all parts are toxic
Hyacinth - all parts are toxic
Hydrangea - all parts are toxic
Non-Toxic
Hens and Chicks
Hibiscus
Honeysuckle
Hoya
-I-
Toxic
Iris - all parts are toxic
Ivy (Boston, English, and some others) - all parts are toxic
Non-Toxic
Impatiens
Indian Hawthorne
-J-
Toxic
Jack-in-the-Pulpit - all parts are toxic
Jasmine - all parts are toxic
Jerusalem Cherry - all parts are toxic
Jerusalem Nightshade - unripe berries and leaves are toxic
Jessamine, Yellow - leaves and stems are toxic
Jimsonweed - seeds, leaves, and flowers are toxic
Johnson Grass - all parts are toxic
Jonquil - all parts are toxic
Juniper - all parts are toxic
Non-Toxic
Jade Plant
-K-
Toxic
Kalmia - all parts are toxic
Non-Toxic
Kalanchoe
-L-
Toxic
Lantana - all parts are toxic
Larkspur - all parts are toxic
Laurel - all parts are toxic
Leucotho - all parts are toxic
Lily-of-the-Valley - all parts are toxic
Lily, Arum - all parts are toxic
Lobelia - all parts are toxic
Locoweed - all parts are toxic
Locust (Black and Honey) - all parts are toxic
Lords and Ladies - all parts are toxic
Lupine - all parts are toxic
Non-Toxic
Larch
Lemon balm
Lilac
Lily (Easter or Tiger)
-M-
Toxic
Malanga - all parts are toxic
Marijuana - all parts are toxic
Meadow Saffron - all parts are toxic
Mescal Bean - all parts are toxic
Mexican Breadfruit - all parts are toxic
Mexican Poppy - all parts are toxic
Milkweed - all parts are toxic
Mistletoe - all parts are toxic
Mock Orange - all parts are toxic
Moonseed - all parts are toxic
Monkshood - all parts are toxic
Morning Glory - seeds are toxic
Mountain Laurel - all parts are toxic
Mushrooms - all parts are toxic
mango leaves-all parts ..especially to humans ( thanks budgietom )
Toxic
Narcissus - all parts are toxic
Navy Bean - all parts are toxic
Nettle - all parts are toxic
Nightshade (Bittersweet, Black Garden, Cherry, Deadly, Eggplant, Jerusalem, and Woody) - unripe berries and leaves are toxic
Toxic
Oak - all parts are toxic
Oleander - all parts are toxic
Non-Toxic
None
-P-
Toxic
Peach - pits, leaves, and bark are toxic
Pear - seeds, leaves, and bark are toxic
Peires - all parts are toxic
Pencil Tree - all parts are toxic
Peony - all parts are toxic
Periwinkle - all parts are toxic
Peyote - all parts are toxic
Philodendron - all parts are toxic
Pigweed - all parts are toxic
Plum - pits, leaves, and bark are toxic
Poison Hemlock - all parts are toxic
Poison Ivy - all parts are toxic
Poison Oak - all parts are toxic
Poison Sumac - all parts are toxic
Poinciana - all parts are toxic
Poinsettia - all parts are toxic
Poppy - all parts are toxic
Pokeweed - all parts are toxic
Potato - sprouts, berries, leaves, and green tubers are toxic
Pothos - all parts are toxic
Precatory Bean - all parts are toxic
Primrose - all parts are toxic
Privet - all parts are toxic
Pyracantha - all parts are toxic
Toxic
Ragwort - all parts are toxic
Rain Tree - all parts are toxic
Ranunculus - all parts are toxic
Rattle Box - all parts are toxic
Red Maple - all parts are toxic
Rhododendron - all parts are toxic
Rhubarb - leaves are toxic
Rosary Pea - all parts are toxic
Runner Bean - all parts are toxic
Non-Toxic
Raphiolepsis
Ribbon
Rose
Rubber Plant
Russian Olive
-S-
Toxic
Sage - all parts are toxic
Sago Cycas - all parts are toxic
Sandbox Tree - all parts are toxic
Scarlet Bean - all parts are toxic
Shamrock Plant - all parts are toxic
Skunk Cabbage - all parts are toxic
Snowdrop - all parts are toxic
Snow on Mountain - all parts are toxic
Sorghum Grass - all parts are toxic
Sorrel - all parts are toxic
Spurges (Candelabra, Crown of Thorns, Pencil Tree, Snow on Mountain) - all parts are toxic
Star of Bethlehem - all parts are toxic
Sudan Grass - all parts are toxic
Sweet Pea - all parts are toxic
Toxic
Tansy Ragwort - all parts are toxic
Taro - all parts are toxic
Tobacco - all parts are toxic
Tomato - stems and leaves are toxic
Tulip - all parts are toxic
Trumpet Vine - all parts are toxic
Non-Toxic
Thistle
Ti Plant
Tiger Lily
-V-
Toxic
Virginia Bower - all parts are toxic
Virginia Creeper - all parts are toxic
Vetches - all parts are toxic
Non-Toxic
Violet
-W-
Toxic
Water Hemlock - all parts are toxic
Wattle - all parts are toxic
Waxberry - all parts are toxic
White Cedar China - all parts are toxic
Wisteria - all parts are toxic
Woody Nightshade - unripe berries and leaves are toxic
Non-Toxic
Wandering Jew
Willow
-Y-
Toxic
Yellow Jasmine - all parts are toxic
Yew - all parts are toxic