It is well known that the fruits of the photinia are poisonous to humans. But the toxic effect only occurs through special chemical processes. With a few tips, you can plant the medlar without hesitation.
The fruits of the medlar are poisonous
Toxicity to humans and animals
Photinus develop numerous red or blue fruits in autumn, which are reminiscent of small apples. In addition to their decorative character, the fruits fulfill another function in winter. They are popular food for birds. While in some animals such as horses severe symptoms of poisoning can occur after consumption, there is only a low risk of poisoning for humans.
Overview: The plant poison
The leaves, stems, fruits and seeds of some photinia species contain cyanogenic glycosides. These plant toxins are found in many rose plant seeds and consist of a combination of alcohol, carbohydrates and a nitrile group. This chemical compound is not yet toxic in itself. When certain enzymes break down the compound, hydrocyanic acid is formed. If horses eat the parts of the plant, the hydrocyanic acid intervenes in the energy metabolism within a short time. The tissue cannot absorb oxygen. This leads to muscle cramps, an increased heart rate and rapid breathing.
Symptoms in humans:
- headache and dizziness
- nausea and vomiting
- diarrhea
Plant safely
Not all species and varieties of medlar are suspected of being poisonous. There is no need to worry when planting the popular variety 'Red Robin'. In environments where children play, you should make sure you regularly cut back the faded inflorescences. This prevents fruits from developing that encourage children to snack. In the area of horse paddocks and pastures, you should avoid planting hedges made of photinia, or cut back the branches so far that no animals can eat them.