Video is not working but your detailed information is really helpful. Mushrooms grow from fungal spores that thrive in damp, dark conditions. They require a medium that is high in decaying plant matter. They often spring directly from dead trees. Plants, on the other hand, grow from seeds and require plenty of sun and soil, and don't do well in overly damp environments. Mycelium, or actively growing mushroom culture, is placed on a substrate, usually sterilized grains such as rye or millet and induced to grow into those grains. This is called inoculation.