Gina1960 said: They are new growth. You can leave them or separate them
MsDoe said: I've seen them do this when the roots are failing. It's almost as if they're trying to crawl up and out of the soggy muck.
I'd go ahead and try to gently separate those sprouts and pot everything at the proper level, not trying to force roots up or down.
Humboldt said: I always save chopsticks for just this reason.
They make excellent supports until plants can anchor themselves with new roots.
I connect them to plants with everything from hemp or jute twine, twisted tall grass (works great), heavy duty rubber gears ties (like twist ties but strong enough to last years, available from maybe 3" to 18"). Latex bandaging for dogs is cheap and works great also and dissolves on its own after a couple months.
purpleinopp said: This is called stacking. I suspect it happens in over-crowded conditions, but it's just a guess.
1337n3ss said: That is a good idea. I personally use barbeque skewer sticks as supports falling plants.