Instructions

Poisonous summer flowers


Not all beautiful plants in the garden are harmless. Sometimes appearances are deceptive and the popular plants are poisonous. Our detailed list of poisonous summer flowers shows which are included.

No hobby gardener wants to miss out on colorful splashes of color in the bed or planter. Summer flowers are synonymous with sunshine, warmth and colors. An extensive abundance of growth and flower shapes does not make the choice easy. Among the summer flowers there are small, strong and bushy growing, hanging, wonderfully fragrant - but unfortunately also poisonous specimens.

When planning the garden, it should be borne in mind that the abundance of flowers can quickly become a hazard if there are small children in the household and pets are on the property. If the garden has already been laid out, you should perhaps take a closer look at it from this point of view. Because many plants that are already busy growing there could be poisonous without you being aware of it.

Below we have put together a selection of poisonous plants that are most common in the garden. Not all poisonous plants are listed here, as this would go beyond the scope. Therefore, when buying plants, pay attention to the information on the label or inquire with a specialist so that summer gives you blooming blossoms without remorse.

We differentiate below:

  • weakly poisonous plants
  • Toxic plants
  • highly poisonous plants

Slightly poisonous plants

Hyacinth

As one of the first heralds of spring, the hyacinth is a frequent guest on our window sills. Subsequently, the hobby gardener usually plants them outdoors, where they will herald in spring the following year.

However, the onion of the hyacinth is poisonous and even those who eat the leaves in large quantities will feel the effects of the poison.

plant partssymptoms
onions
stalks
leaves
seed
nausea
skin irritation
kidney damage
paralysis

The plant can be particularly dangerous for small children. There are hardly any complaints when eating smaller quantities. The calcium oxalate salt it contains can also lead to allergies and skin irritation.

" Tip: Always wear gloves when planting hyacinths!

Peony

Peonies can be found in many gardens and delight the eye with their multifaceted flower colors in early summer. As a poisonous plant, the peony will not be known at all, on the contrary, in natural medicine the plant is valued, for example, for indigestion or gout.

Toxic parts of plantssymptoms
stalks
leaves
blossoms
nausea
Vomit
diarrhea
stomach pain

Small amounts of food do not have a negative impact on health. Young children should be kept away from the peony. In cats, eating plants causes diarrhea and vomiting.

Caution: Peonies are highly toxic to dogs!

Tulip

A herb has grown against the winter gray with tulips. As of February, bouquets of tulips can be found in almost every supermarket and most gardens cannot do without the colorful early bloomers. Very few flower friends will know or consider that the tulip is poisonous.

Toxic parts of plantssymptoms
stalks
leaves
blossoms
onion
nausea
Vomit
increased salivation
stomach pain
states of shock

“Tulip bulb dermatitis” can occur with prolonged skin contact. This leads to the formation of eczema and the fingernails can break. This skin irritation lasts for a few days and subsides by itself.

Columbine

With its blue flowers, the columbine offers a pretty sight and therefore occurs not only in the woods, but also in many gardens. Columbine belongs to the buttercup family, a poisonous family of plants.

Toxic parts of plantssymptoms
seed
stalks
leaves
blossoms
nausea
Vomit
cramps
difficulty in breathing
Arrhythmia

Most of the poison is in the seeds. Eating fresh leaves can also trigger the symptoms mentioned. The ingredients magnoflorin and glycoside form hydrocyanic acid. External contact may cause redness and skin irritation.

" Tip: Columbine tastes bitter and is therefore avoided by pets.

Other weakly poisonous plants:

  • daffodil
  • snowball
  • Wisteria
  • snowdrop
  • Giant hogweed
  • lupine

Toxic plants

Cyclamen

You are looking for an easy-care plant that will delight you with its bloom for a long time on the windowsill. Then you should prefer the cyclamen. The plants are particularly common in pensioner households. Mostly pets also live there. Cyclamen has also found its way into many gardens. However, many hobby gardeners are hardly aware of the toxicity.

Toxic parts of plantssymptoms
tuber
stalks
leaves
blossoms
Nausea vomiting diarrhea fever
sweats
cramps
respiratory paralysis
Drop in blood pressure
dizziness

Most of the toxins are in the tuber. Eating eight grams is considered fatal. The most toxic ingredient is the metabolism-influencing cyclamine.

Oleander

In our latitudes, the oleander is one of the most popular flowering perennials, whether as a bush in the garden or as an ornament in a tub on a balcony or terrace. The pretty abundance of flowers may hide the danger, but the oleander is also one of the poisonous summer flowers.

Toxic parts of plantssymptoms
stalks
leaves
blossoms
nausea
a headache
cramps
Arrhythmia
in high doses cardiac arrest

" Tip: The plant tastes very bitter, which usually prevents small children and pets from eating it.

The toxin contained in the oleander is called glycoside oleandrin. In addition to the described symptoms of intoxication, redness and irritation can also occur on skin contact.

Yew

The yew is very popular in our gardens. The evergreen plant is a splash of color in the dreary garden even in winter. Yew trees can grow up to 15 meters in height and thus provide good privacy. The red fruits offer an additional ornament.

Toxic parts of plantssymptoms
needles
seed
nausea
paleness
dry mouth
stomach pain
Red coloring of the lips
Cardiovascular disorders

The poison taxin is contained in the dark, shiny needles. When they are consumed, severe symptoms of intoxication can occur, which damage the liver and kidneys and, in extreme cases, can also be fatal. The red berries appear particularly attractive to small children. These are only slightly toxic compared to the needles. However, children should always be kept away from the plants.

Boxwood

Box trees can be found in many gardens. They serve as a border for the bed or are formed into spheres, pyramids or other figures. The boxwood is also a frequent guest on terraces and in entrance areas. Not everyone is aware that the evergreen plant also contains toxins.

Toxic parts of plantssymptoms
bark
leaves
blossoms
stalk
Nausea vomiting
diarrhea
Tremble
cramps
Drop in blood pressure
Circulatory collapse

Up to 70 different poisons can be detected in the book tree. Buxin is the main active ingredient. Adults are less at risk because the amount of toxins ingested must always be considered in relation to body size and weight. Small animals and children are particularly at risk.

Other poisonous plants:

  • delphinium
  • lily of the valley
  • ivy
  • cherry laurel

Very poisonous plants

Angel's Trumpet

The angel's trumpet is a distinctive container plant that particularly appeals to us with its striking fragrant flowers. However, the smell of the angel's trumpet can trigger poisoning symptoms and unpleasant reactions.

Toxic parts of plantssymptoms
leaves
blossoms
stalk
Nausea vomiting
unrest
fever
blurred vision
cramps
rapid pulse

Hallucinations are observed a few hours after ingestion. The plants are poisonous from a quantity of just 0.3 grams. In severe cases, breathing may stop.

Autumn crocus

At the end of the garden year, the Herbstzeitlose provides a last splash of color in the bed. Therefore, the flowering plant is often found in our gardens. The pretty, purple flowers shouldn't hide the fact that it is a poisonous plant.

Toxic parts of plantssymptoms
tuber
seed
leaves
blossoms
stalk
nausea
Vomit
diarrhea
bleeding
Death from respiratory paralysis

Most of the toxins are concentrated in the tubers and seeds. The main toxin, colchicine, is similar to arsenic. There are 20 more alkaloids.

Caution: The leaves of the autumn timeless can easily be mistaken for wild garlic. There is danger to life here!

All parts of the plant are extremely toxic to humans and animals. After consumption, the above-mentioned symptoms of poisoning occur. Death from respiratory paralysis occurs about two days after consumption.

Hellebore

Every hobby gardener would like to see their garden green and bloom all year round. The Christmas rose can be an eye-catcher in the wintry garden. The flowers appear between December and March. The Christmas rose is not only a pretty plant, but also a representative of the genus Helleborus. Members of this plant family are highly toxic.

Toxic parts of plantssymptoms
root
seed
leaves
blossoms
stalk
Nausea vomiting
diarrhea
dizziness
Inflammation in the mouth
Arrhythmia
Circulatory collapse

The heart poison Saponin is mainly represented. The toxin Helleborin is increasingly found in the rhizome. Severe symptoms of intoxication can occur when consuming the seed pods. In high doses, the poison of the Christmas rose is deadly. Death occurs through respiratory paralysis.

Daphne

The small red flowers of the bastion awaken the desire for spring in late winter. Therefore, the daphne not only grows in forests and meadows, but also increasingly in the home gardens. The silk bast can grow about 1.5 meters high and forms uniform, red fruits in late summer.

Toxic parts of plantssymptoms
root
leaves
blossoms
stalk
seed
Nausea vomiting
Inflammation and swelling in the mouth
thirst
difficulties swallowing
Arrhythmia
Circulatory collapse

The symptoms of intoxication appear just a few minutes after consumption. If the seeds are bitten and eaten, there is a burning and blistering in the mouth. Externally, the released toxins can lead to skin swelling, itching and blistering.

Other highly toxic summer flowers:

  • wondertree
  • tree of life
  • laburnum
  • Aronstaab
  • foxglove

Poisonous balcony flowers - the underestimated danger

Männertreu

If you want a lavish bloom in the flower box, you will increasingly resort to men's loyalty. The blue flowers delight the eye from early summer to autumn.

However, all plant parts are poisonous. It contains several alkaloids. Young children and pets should be kept away from the plant.

" Tip: Faithful to men and other lobelia look particularly decorative in hanging baskets and are also perfectly safe there.

Kugelprimel

The ball primrose is no exception. Toxic substances are found in all types of primula. Primin is a strong contact allergen. Gloves should therefore always be worn when planting and caring for the primroses.

Petunias

Petunias are among the most popular plants for containers and window boxes. The richness of colors and the abundance of flowers may hide the fact, but petunias are nightshades and poisonous. The green parts of the plant contain solanine. The petunia does not differ from the related unripe tomato.

Help, poisoned - what to do?

If people or pets have eaten poisonous summer flowers, courageous and immediate action is necessary. It is best to see the nearest doctor. If there are already clear signs of poisoning, call the emergency doctor. Affected people should drink plenty of water so that the toxins in the body are diluted. The intake of activated carbon absorbs the toxic substances. Have the plant or parts of the plant ready when the helpers arrive.

Knowing about the poisonous plants in your garden is the best way to prevent poisoning from plants in humans and animals.

Appropriate plants should be avoided when planning the garden if children and pets should play and romp around there carefree. Remember, small bipeds and four-legged friends are unpredictable and you cannot have your eyes everywhere at the same time. Poisonous houseplants should also be placed out of the reach of small children and pets. How about, for example, hanging baskets or decorations on the living room cabinet. The same applies of course to bouquets, because these often tempt you to touch and explore more than the flowers in the garden bed.

How common are poisonings from summer flowers?

The all-clear can be given here, because many plants are simply not to the taste of small children or pets. As a result, only very small amounts are consumed or the plant is spit out immediately. The symptoms of intoxication that occur are correspondingly low and usually only cause discomfort, vomiting or diarrhea.

" Tip: Only about every 70th poisoning from plants is associated with severe symptoms of poisoning.

How poisonous is a plant?

We have already made a classification, but the toxicity can usually not be clearly determined. How toxic a plant really is depends on a number of factors:

  • Location
  • season
  • Fruchtstand
  • Serving Size
  • part of plant
  • consumption form
  • individual systems (allergies, sensitivities)

For globetrotters - the most poisonous plants in the world

Wondertree

  • Already taking two to four seeds is fatal.
  • The intake leads to clumping of the red blood cells.
  • No antidote is known.

Water hemlock

  • The rhizome can easily be mistaken for the edible parsnips.
  • About 30% of water hemlock poisoning ends in death.
  • No antidote is known.

White fruity Christopher herb

  • The plant is native to North America.
  • The berries are edible for birds.
  • In humans, consumption leads to cardiac arrest.

Paternoster pea

  • The paternoster pea is a tropical plant.
  • The seeds are often worn as necklaces.
  • Consumption leads to heart and kidney failure and respiratory paralysis.

Australian nettle

  • The Australian nettle occurs in the rainforests.
  • The plants can grow up to ten meters high.
  • Skin contact leads to irritation, swelling and long-lasting pain.

Monkshood

  • Rashes occur when touching the plant.
  • The consumption triggers respiratory paralysis and cardiac arrest.
  • No antidotes are known.

Wrinkled waterost

  • The plant was once widespread in America.
  • Today the Runezlige Wasserdost has become rare.
  • The poison was once ingested by the milk of farm animals.

Manchineel