In the long run, nothing, in terms of issues, if that is what you're asking. It would end up flowering and harvesting just fine. In the short term, depending on it's stage of maturity and flowering, it may just keep vegging, or if it is further along, it will revert back to veg which may involve a week of basil shaped leaves, and after that normal growth.
Short story is that unless you have REALLY shitty genetics, your plant is not gonna die or turn into a hermaphrodite, it will just end up going back into vegging or staying in vegging mode. If only 6 days of 12/12, i'd say it's more likely the latter.
If your plant is 3 inches tall after 21 days i'd say you have something VERY wrong with your grow.
You said 21 days old from seed? now it's a clone EH??
Hint: Ask your question again and actually explain what is what. I know longer know what you're talking about.
And just my opinion, but stop using explanation marks as if we should clearly know what you're talking about. Because we don't. Think about how to phrase your questions before submitting them.
Read my first post.
It will take about 2 weeks under good conditions for it start back into veg. I just did with with 3 clones i got from a friend that were taken from a flowering plants. At first i did not think anything was gonna happen but after about 2 weeks things really took off. You can look at some of my threads to see some pics of the progress.
Best of luck.
It is a feminized seed. Reserva privida og kush femYes, it will be stunted and take about a week to go back into vegging. Why put it back tho? id keep it in flower and see if you even have a female before putting then both in veg, why waste time and energy to see if there boys.
How many weeks have you been revegging those? They look really good!
Been like a month now, Im back to start training as height might start to be a issue soon.