We offer inoculated field eryngo ( micercardo ) with king trumpet mushrooms, and non-inoculated field eryngo, to create a mushroom bed. A mushroom bed is an area of ground where field eryngo is present where the mycelia of the mushroom act by moving from the subsoil of one root to another neighboring root and produce mushrooms when the temperature and humidity are propitious. The king trumpet mushroom lives in close relationship with the field eryngo, feeding off its roots and causing it to disappear (saprophytism-parasitism). For the mushrooms to appear, it is necessary to plant the field eryngo in the terrain, of which only a portion (25%) of these plants need to be inoculated.

Any type of soil is adequate; if field eryngo is already present, it is sufficient to plant only the inoculated variety (micercardo).