The fern has a reputation for growing rampantly in German forests and elsewhere in the world. Some gardeners appreciate different types of ferns in their green paradise as an ornamental and tropical-looking ensemble. But what about toxicity?

Ferns are poisonous and, in the worst case, can even be carcinogenic

All fern species are poisonous

All types of ferns are considered poisonous - some more, others less. Therefore, you should be wary of consuming any species of fern. Even inhaling the spores that are on the underside of the leaf can have negative consequences.

Bracken - the most poisonous fern in Germany

The bracken fern, which is often found in Germany, is the most poisonous representative of the ferns in this country. It is assumed that its spores, which contain the enzyme thiaminase, have a carcinogenic and bone marrow-damaging effect on the body. Besides the spores, its leaves are toxic. They contain hydrocyanic glycosides and a toxic saponin. Especially the young leaves are dangerous!

Male fern: Better to refrain from worming

Although the male fern was taken as a remedy against worms in earlier times, it should not be eaten. It was not uncommon for deaths to result from eating this fern. The rootstock and stems of young plants in particular are highly toxic. Already 100 g are deadly for a cattle.

Symptoms of fern poisoning

Animals such as cats and dogs as well as humans react to ferns and show the following symptoms, for example, in the event of poisoning:

  • Vomit
  • diarrhea
  • stomach pain
  • fainting
  • cardiac insufficiency
  • visual disturbances
  • motor disorders
  • disturbances in movement
  • breathing problems

tips and tricks

Fern is non-toxic when applied externally and can be used, for example, to treat headaches, rheumatism, calf cramps and gout.

Category:

Vegetable garden