Indian poke (Phytolacca acinosa) is a perennial shrub with deep red or purple berries. The genus name for this species comes from a Greek word for “plant” and a Latin word that means “dye,” and a look at the berries makes the reason obvious. Its mature leaves and stalks are poisonous.

Bearded iris is known to cause contact dermatitis in some individuals. The most commonly reported symptom is minor skin irritation, typically lasting only a few minutes. This can result from contact with the seeds, roots, or sap of this plant. Furthermore, all parts of bearded iris are toxic when ingested, especially the roots. Symptoms typically including minor or moderate burning sensations, nausea, vomiting, abdominal pain, diarrhea, and fever. This plant is most often encountered in a garden context, where it is planted as an ornamental.

Evergreen spindle(Euonymus japonicus) is a popular ornamental evergreen shrub with numerous cultivars. Due to its superb adaptability and decorative looks, evergreen spindle can be found in parks and gardens all over the world. Its flowers produce a lot of nectar, which makes this plant very attractive to bees.

Smoketree is a deciduous tree native to Southern Europe and Central China. The flowers of the smoketree are pinkish-purple and long-lasting. They grow in clusters along branches and give a smoky appearance to the tree when in bloom. In China, they are used as important fall decorations due to their foliage turn bright red in the fall.

Creeping buttercup can be severely toxic to dogs; you should seek immediate veterinary attention if you believe your dog has eaten or come into contact with a plant of this type. All parts of these plants contain ranunculin, a toxin that is poisonous when swallowed and also can irritate skin, causing redness or itch. Ingestion symptoms ranging from excessive drooling, vomiting, diarrhea, weakness, and loss of appetite to paralysis, seizures, jaundice, spasms, collapse, or even death.

The common columbine is a tall, flowering plant, typically with a long stem and light purple flowers. The Latin specific name for the plant, "vulgaris," means "common," and it comes from the fact that the plants spread easily and grow in many places around Europe. Ancient Romans considered the common columbine to be sacred for the goddess, Venus.

True to this plant's reputation, consumption of potato can be extremely toxic to dogs, and warrants immediate veterinary attention. All parts of these plants contain several toxic substances which can cause loss of appetite, excessive drooling, vomiting, diarrhea, dilated pupils, confusion, behavioral changes, and weakness. In more severe cases, difficulty breathing, a lowered heart rate, coma, or even death may occur, so treat it as a medical emergency if your pet has come into contact with this plant.

Common barberry is a shrub with unpleasant-smelling flowers and red berries. The flowers can be used to create yellow dye while the berries have culinary and medicinal uses in Iran and medicinal use in China that dates back 3,000 years. Despite this, common barberry can be a host to wheat rust that is highly damaging to grain crops in America.

Although its berries look juicy and tempting, the fruits and the root of pokeweed are toxic and should not be eaten. Pokeweed is considered a pest species by farmers but is nevertheless often grown as an ornamental plant. Its berries can be made into pokeberry ink as well.

Although commonly kept as houseplants, all parts of the dieffenbachia contain toxic compounds that are especially dangerous to children and pets.

Autumn crocus (Colchicum autumnale) is a flowering plant native to the coast of the Mediterranean and the Black Sea. Its flower stalks grow up after a period of time after its leaves die out, so you can see its flowers or leaves but never both. Consumption of autumn crocus is toxic and is particularly poisonous to cats. Autumn crocus is not the source of saffron. Saffron is produced by another species in the crocus family.

Hairy willowherb (Epilobium hirsutum) is a species of weed that is difficult to eradicate. It is not known to be toxic, but the sale of this plant or its seeds has been banned in some areas. This is because its dense, aggressive growth habits can crowd out and destroy other native beneficial plants.

Consolida regalis, or forking larkspur, is an annual herb in the buttercup family. Native to parts of Europe and Asia, this plant is becoming harder to find because of the effects of herbicides. Like other species of buttercup, this plant is poisonous.

Striped barbados lily is perennial herbs with showy flowers but it contains toxic compounds, most notably alkaloids lycorine and tazetine, as well as calcium oxalate crystals.

Hyacinthus orientalis is one of the heralds of spring. The name common hyacinth comes from the Greek name Hyacinthus. According to Greek legend, Hyacinthus was admired by both Apollo and Zephyrus. Hyacinthus ended up being killed out of jealousy and a flower bloomed on the spot where his blood was spilled. Apollo named the flower after his lost love.

Evergreen azalea is a stunning woody flowering plant, but is also highly toxic to humans and animals.

All parts of the persian cyclamen contain toxins that are extremely hazardous to dogs, with the highest concentration in their tubers. Use caution if your dog is in a yard where persian cyclamen is found, especially if they enjoy digging. Symptoms range from lethargy to coma, and immediate veterinary care is needed to pump the canine's stomach to void the body of the toxin.

Ingestion of any part of the wild daffodil (of the genus Narcissus pseudonarcissus) is extremely toxic for dogs and requires veterinary attention. All parts of these plants contain harmful toxins, and the bulbs usually store these toxins in the highest concentrations. Symptoms can include vomiting, diarrhea, and excessive drooling. If large quantities of plant material are eaten, dogs may experience weakness, tremors, seizures, arrhythmia, or even death.

Savin juniper is a poisonous coniferous shrub native to parts of Europe and Asia. It is often cultivated as a hedge and is resistant to deer, drought and pollution. It is easy to grow but does not tolerate wet soils.

Common yew is highly toxic to all animal species, including humans, dogs, cats, livestock and poultry, with all parts of the plant capable of causing death when consumed in large amounts.