I’ve been encouraging these unknown poppies (probably Spanish poppies?) to grow around the perimeter of my stone patio because they seem to thrive in small cracks but unlike their main competitors (dandelions and grass) they are easily pulled up when they volunteer somewhere they aren’t wanted.
This patch is pretty much done flowering and just started dropping its seed, and the patio stones are thick with it:
I just swept that pile of seeds into the next bare area where I’ve pulled out dandelions and grass.