TOXIC!

Poison plants
Please, don't do any self medication, if you're not 100% sure, what you're giving to your animal, you could do more harm, than you can imagine!
What's good for humans can be very dangerous for animals!
Alphabetic by latin name, including english and german names
To find the plant you're looking for, click "ctrl and f"

Aesculus pavia var. pavia
Common Name: Red Buckeye
deutscher Name: Echte Pavie
Toxic to horses, cats and dogs

Aloe
Common name: Aloe Vera, Barbados Aloe, Medicinal Aloe, Medicine Plant, True Aloe
deutscher Name: Echte Aloe
Toxic to horses, cats and dogs

Alocasia
Common name: Elephant ear
deutscher Name: Pfeilblatt
Toxic to horses, cats and dogs

Amaryllis
Common name: Cape Belladonna
deutscher Name: Amaryllis
Toxic to horses, cats and dogs and humans as well

Ammi majus
Common name: Bishop's Weed, False Queen, Anne's Lace, Greater Ammi
deutscher Name: Große Knorpelmöhre
Toxic to horses, cats and dogs

Apocynum androsaemifolium
Common name: Bitter Root, Dogbane, Dogbane Hemp, Indian Hemp, Spreading Dogbane
deutscher Name: Fliegenfallen-Hundsgift
Toxic to horses, cats and dogs and humans as well

Aralia spinosa
Common name: Devil's walking stick
deutscher Name: Südöstlicher Aronstab
Toxic to horses, cats and dogs

Arum maculatum
Common name: Adam and Eve
deutscher Name:
Toxic to horses, cats and dogs and humans as well, special to little children.

Arum palaestinum
Common name: Black Calla, Black Calla Lily, Solomon's Lily, Wild Arum, Wild Calla
deutscher Name: Schwarzer Aronstab
Toxic to horses, cats and dogs and humans as well

Begonia
Common name: Angel wing begonia and many more
deutscher Name: Begonie
Toxic to horses, cats and dogs, Poison Severity for humans is low

Borago officinalis
Common name: Borage, Cool Tankard, Cover Crop, Starflower, Tailwort, Talewort
deutscher Name: Borretsch
Toxic to horses, cats and dogs and humans as well

Brassaia actinophylla / Heptapleurum actinophyllum formerly Schefflera actinophylla
Common name: Australian umbrella tree, Queensland umbrella tree, octopus tree and amate.
deutscher Name: Großblättrige Schefflera, Regenschirmbaum oder Queensland-Strahlenaralie
Toxic to horses, cats and dogs, slightly toxic to humans

Brunfelsia - species
Common name: Brunfelsia, Kiss-Me-Quick, Lady-of-the-Night, Magnificent Brunfelsia, Morning-Noon-and-Night, Yesterday, Today and Tomorrow
deutscher Name: Brunfelsia, Brunfelsie
Toxic to horses, cats and dogs, slightly toxic to humans

Buxus
Common name: Box, Boxwood
deutscher Name: Buchsbaum
Toxic to horses, cats and dogs

Caladium bicolor Previously known as Caladium x hortulanum
Common name: Angel Wings, Caladium, Candidum, Elephant's Ears, Exposition, Fancy-leaved Caladium, Malanga, Mother-in-law Plant, Pai, Pink Cloud, Stoplight, Taro, Texas Wonder, Via, Via sori
deutscher Name: Kaladien
Toxic to horses, cats and dogs and humans as well

Carum carvi
Common Name: Caraway, Meridian Fennel, Persian Cumin
deutscher Name: Echter Kümmel
Toxic to horses, cats and dogs

Celastrus scandens
Common name: American bittersweet or bittersweet
deutscher Name: Amerikanischer Baumwürger
Toxic to horses, pets, lifestock and humans

Centaurea solstitialis
Common name: Barnaby's Thistle, Yellow Knapweed, Yellow Star Thistle
deutscher Name: Sonnenwend-Flockenblume
Toxic to horses

Citrus mitis
Citrus x aurantium
Common name: Bergamot, Bergamot Orange, Bigarade Orange, Bitter Orange, Citrus bergamia, Seville Orange, Sour Orange
deutscher Name: Bitterorange oder Pomeranze, auch Sevilla-Orange und Saure Orange
Toxic to horses, cats and dogs

Colchicum autumnale
Common name: autumn crocus, meadow saffron or naked ladies
deutscher Name: Herbstzeitlose
Toxic to horses, cats and dogs and humans as well
In 2010 it was choosen as "Toxic plant of the year" in Germany

Cordyline terminalis
Common name: Ti-Plant, Good-Luck Plant
deutscher Name: Feuerpalme
Toxic to horses, cats and dogs

Dysphania botrys
Common name: Jerusalem oak goosefoot, sticky goosefoot or feathered geranium
deutscher Name: Klebriger Drüsengänsefuß
Toxic to horses, cats and dogs

Euonymus atropurpureus
Common Name: American Wahoo, Burningbush, Burning Bush, Eastern Wahoo Hearts, Bursting With Love, Indian Arrow Wood, Spindle Tree, Wahoo, Wahoo Euonymus
deutscher Name: Breitblättrige Pfaffenhütchen, Purpur-Spindelstrauch
Toxic to horses, cats and dogs and humans as well

Fagopyrum esculentum
Common name: Buckwheat
deutscher Name: Echter Buchweizen
Toxic to horses, cats and dogs and humans as well

Gardenia jasminoides
Common name: Cape Jasmine, Cape Jasmine Gardenia, Cape jessamine, Gardenia
deutscher Name: Gardenie
Toxic to horses, cats and dogs

Hedera helix Common name: Algerian Ivy, Baltic Ivy, Branching Ivy, California Ivy, Common Ivy, English Ivy, Glacier Ivy, Hahn's Self Branching English Ivy, Needlepoint Ivy, Sweetheart Ivy
deutscher Name: Gemeiner Efeu
Toxic to horses, cats and dogs and humans as well

Ilex opaca
Common name: American holly
deutscher Name: Amerikanische Stechpalme
Toxic to horses, cats and dogs

Iris spuria
Common name: Blue Iris, Butterfly Iris, Salt Marsh Iris, Seashore Iris, Species Iris, Spuria Iris
deutscher Name: Bastard-Schwertlilie
Toxic to horses, cats and dogs

Juglans nigra
Common name: Black Walnut
deutscher Name: Schwarznuss
Toxic to horses, cats and dogs

Kalmia polifolia
Common name: Bog Kalmia, Bog Laurel, Pale Laurel, Swamp Laurel
deutscher Name: Sumpflorbeer, Sumpflorbeer oder blasser Lorbeer
Toxic to horses, cats and dogs and humans as well

Laurus nobilis
Common name: Bay Laurel, Bay Leaf Tree, Bay Tree, Grecian Laurel, Sweet Bag Sweet and more
deutscher Name: Echter Lorbeer
Toxic to horses, cats and dogs

Leucothoe fontanesiana
Common name: Doghobble, Dog Hobble, Drooping Leucothoe, Fetterbush, Mountain Doghobble
deutscher Name: Gebogene Traubenheide
Toxic to horses, cats and dogs and humans as well

Lobelia cardinalis
Common name: Cardinal Flower, Indian Pink, Lobelia
deutscher Name: Lobelien
Toxic to horses, cats and dogs and humans as well

Malus sylvestrus
Common name: crabapple
deutscher Name: Holzapfel
In large enough quantities, any apple (or crab apple) can cause gastrointestinal upset. In addition, apple seeds contain cyanide, a highly toxic chemical to most animals. Typically, horses would need to consume a cup of seeds to feel toxic effects (that's a lot of apples!).
Toxic to horses, cats and dogs

Melia azedarach
Common name: Bead Tree, China Ball Tree, Chinaberry, Japanese Bead Tree, Paradise Tree, Persian Lilac, Pride-of-India, Syringa, Texas Umbrella Tree, White Cedar
deutscher Name: Zedrachbaum
Toxic to horses, cats and dogs and humans as well

Persea americana
Common name: Avocado
deutscher Name: Avocado
Toxic to horses, goats and sheep

Pieris japonica
Common name: Japanese andromeda, Lily of the valley bush
deutscher Name: Japanische Lavendelheide
Toxic to horses, cats and dogs and humans as well

Plectranthus amboinicus
Previous know as Coleus amboinicus
Common name: Caribbean Oregano, County Borage, Cuban Oregano, French Thyme, Indian Borage, Indian Mint, Mexican Mint, Soup Mint, Spanish Thyme, Vick's Plant
deutscher Name: Mexikanischer Oregano
Toxic to horses, cats and dogs

Pinus ponderosa var. scopulorum
Common name: Black Hills Ponderosa Pine, Interior Ponderosa Pine, Ponderosa Pine, Rocky Mountain ponderosa pine, Rocky Mountain yellow pine
deutscher Name: Gelb-Kiefer
Toxic to horses and cats

Podocarpus macrophyllus
Common Name: Buddist Pine, Chinese Yew, Fern Pine, Japanese Yew, Podocarpus, Shrubby, Shrubby Yew Podocarpus, Southern Yew, Yew Pine, Yew Plum Pine
deutscher Name: Grossblättrige Steineibe
Toxic to horses, cats and dogs and humans as well

Podophyllum peltatum
Common name: American mandrake, mayapple, wild mandrake and ground lemon
deutscher Name: Schildförmiges Fussblatt
Toxic to horses, cats and dogs

Prunus armeniaca
Common name: Apricot
deutscher Name: Marille
Toxic to horses, cats and dogs

Prunus serotina
Common name: Black Cherry, Wild Cherry, Wild Rum Cherry
deutscher Name: Spätblühende Traubenkirsche
Toxic to horses, cats and dogs, lifestock and humans

Pteridium aquilinum
Common name: Adelaarsvaring, Bracken Fern, Brake, Brake Fern, Eagle Fern, Hog-Pasture Bracken, Pasture Bracken, Tailed Bracken Fern, Umbewe, Umhlashoshana
deutscher Name: Adlerfarn
Toxic to horses, cats and dogs
Milk from cows that have ingested this fern may be toxic to humans

Ranunculus
Common name: Butter Cress, Buttercup, Crowfoot, Figwort, Persian Buttercu,p Ranunculus, Spearwort
deutscher Name: Hahnenfuss
Toxic to horses, cats and dogs and humans as well

Rhododendron
Common name: Azalea
deutscher Name: Rhododendron
Toxic to horses, cats and dogs and lifestock. Known poisoning through Azalea honey for humans.

Syngonium podophyllum
Common name: arrowhead plant, arrowhead vine, arrowhead philodendron, goosefoot,nephthytis, African evergreen, and American evergreen
deutscher Name: Veränderliche Purpurtute
Toxic to horses, cats and dogs and humans as well

Taxus canadensus
Common name: Canada yew or Canadian yew
deutscher Name: Kanadische Eibe
Toxic to horses, cats and dogs

Ricinus
The Guinness World Records says, this is the world's most poisonous common plant.
deutscher Name: Wunderbaum
Toxic to horses, cats and dogs and humans as well

Trifolium hybridum
Common name: alsike clover
deutscher Name: Schweden-Klee
Toxic to horses, light-skinned animals are particularly affected if they eat it when it is wet.

Solanum nigrum
Common name: Blackberry Nightshade, Black Nightshade, Common Nightshade, European Black Nightshade, Garden Nightshade, Poisonberry
deutscher Name: Schwarzer Nachtschatten
Toxic to horses, cats and dogs and humans as well

Strelitzia reginae
Common name: Bird of Paradise
deutscher Name: Paradiesvogelblume
Toxic to horses, cats and dogs

Zamia
Common Name: Cardboard Palm, Chigua Cycad, Cycads, cycads and zamias, Fern Palm, koo (Karapana and Tanimuka=, Maw'-ti-ree-na (Kubuyan), Sago Palm
deutscher Name: Zamie
highly toxic to horses, cats and dogs

Zamia furfurcea
Common name: Cardboard Cycad, Cardboard Plant, Cardboard Sago, Jamaican Sago, Mexican Cycad
deutscher Name: Zamie
Toxic to horses, cats and dogs and humans as well

Zantedeschia aethiopica
Common name: calla lily and arum lily
deutscher Name: Calla
Toxic to horses, cats and dogs and humans as well