Heyho immer wieder was neues...
รผbernacht ist dieser nette kleine Pilz gewachsen... Weiร jemand was es fรผr einer ist? ich habe ihn sehr groรzรผgig mit allen wurzeln entfernen kรถnnen aber verdammt wo kommt der her
It looks like an amanita abrupta to me - don't eat it.l
A single mushroom spore would be basically invisible to the naked eye and could have come from anywhere, they grow in conditions with good levels of organic decay meaning your soil is very healthy but you did the right thing removing it.