So last wednesday evening I sowed some cosmos seedlings in a windowsill propagator... Checking them this evening some of them are already at least 2.5" tall and touching the 'roof' of the propagator.
What should I do with them? There are still some cosmos seeds to germinate in there, so should I pot on the germinated ones already? Or should I lift them & plant them deeper so they don't flop? I'm growing them in modular cells.