They grow in American cow poop as well. But some of the feed companies have introduced spore blockers to prevent the production. You used to could sneak onto a dairy farm in the spring and pick a pound of them I hear.
In the Deep South they would sprout in the winter if it hit 70
Farmers hated long hairs in their pastures
One shot my add air conditioner in my mgbgt once in Baldwin county Alabama
I said damn that son of a bitch is shooting my car....he shot it and left