>>2780140>Truffles are not parasitic like most other edible fungus. Truffles create a symbiotic relationship with its host tree breaking down complex components of the soil so the roots can take them up more easily.Actually, most mushrooms that grow in the woods form some kind of mycorrhiza, which is why chanterelles and boletus mushrooms can't be cultivated. Well, maybe they could be, as oak seedlings can be innoculated with truffle spores - subsequently forming a mycorrhiza. It's pretty costly, which is why it's only done with truffles.
Fun fact: Louis XVI of France wanted his subjects to grow potatoes because they were so nutritious, in order to avoid famines. However, the people were suspicious of the plant and didn't grow it.
So he announced planting it in his heavily guarded royal gardens, which spawned curiosity. The guards were ordered to leave their posts after some time, and so people stole the seemingly valuable potatoes and planted them themselves.
Fava beans contain a substance that some people who lack a specific enzyme can't metabolize, which leads to the life-threatening condition called favism. It's passed on genetically.
If you plant an appleseed, its fruits will be bitter, sour and small, only fit for producing alcohol. To get palatable apples, grafting is needed.
All parts of the yew tree - except for the sweet, red berries - are poisonous. It is said that on a hot day, sleeping under a yew tree can be deadly.
The berries, however, can be used to make jam, but remember to remove the seeds, which are extremely poisonous.
