This 2017 video says about itself:
Time Lapse: Mushrooms Growing
This video showcases the mushroom growing process over the course of just six days!
From Pilztag.de in Germany:
The fourth European Mushroom Day will take place on 28th September 2019.
The action day for the mushrooms was initiated by „Der Tintling“, a German popular-scientific journal.
It is celebrated every fourth Saturday in September, in 2019 on September 28th.
The objectives of the European Mushroom Day:
• Increase of the popularity of mushrooms
• Intensification of the knowledge about mushrooms
• Promotion of the mushrooms as hobby for youths
• Central announcement of mycological events at this day
• Protection of habitats of rare fungal species
• Preservation of traditional folk names of mushrooms in the languages of the world
Dear Kitty. Some blog 