This is a 5 week old plant that I don't know the strain (Maybe Amnesia, Super Skank or White Widow). She is still young with just a few leaves, 5" tall, with 18/6 led period, but it seems to be already flowering. Is this right? How to deal with it?
You have an autoflower, or your timer is not correct :P
if it is an autoflower, nothign you can do.. they automatically flower. Keep it healthy.
it may be too late, but get it in a larger pot ASAP. That will greatly impact the height it reaches... if vege growth is nearly over, which it is at 5 weeks for many, there's not much more you can do about it.