Nodes till sex

How many nodes till a seedling shows sex?
I have 10 rombo seedlings and 7 truebluebery I feel are close
rombo are 7 sets of leaves or nodes and blueberry are 6
they are a week from being able to b cloned
I should shoot some pics tommorrow
the aero system is truely amazing. So fast

around the 7th node they'll be mature enough

I've flowered plants with 3 nodes and they mostly showed sex 1 week after 48hrs black.

dagobaker if your have 7 and six nodes they will show gender in a week?
-also can i ask how tall and old your seedlings are?

how tall and old were they and were they clones,? it must've been the two days of dark huh?

this is really old lol