You spore me

Last night these friends popped up out of my flat soil simultaneously and without warning of any kind. It's amazing how fast they appear. What mystifies me is the fact that the first flat was kept warm indoors while the other has stayed in the cold frame for the past several weeks, and last night it must have gotten down to 10º or less out there. Yet despite the temperature difference, they agreed that last night was the night to emerge. Are they in touch somehow, across the ether? Is the moon their satellite relay? I think it's cool, whatever's behind it.