Can a plants se be determined befor it go to the bloom room?

Growing from seed has great rewards such as a new mother plant for your own clones for free. With that being said, is there some way to determine male from female before the plants are placed int the bloom room? The reason I ask is the waisted time, nutrients, and space the male plants use. Thanks for reading my question. Brat Girl

 

preflowers, but usually triggered by lighting change.

 

Yes, when the plants are big enough to take some cuttings, clone them and put the clones in 12/12 and they will show sex within a week or two.

 

I'm confused.

All the plants I have ever seen/grown showed sexual characteristics after about 6-8 weeks of growth. You should be able to see small flowers at the nodes where new branches grow from the main stem.

Before you go to the trouble of cloning, you should be certain that your "mother" is actually a mother and not a father.
After that usually only poor growing conditions could cause a clone to go hermaphrodite or even male, but if conditions are good, all your clones should be the same sex as plant the came from.
That is one of the main advantages to cloning;
shorter time to maturity for the clones and guaranteed females (usually).

 

By all means if they are showing preflowers...well you know what sex it is. But in the case that they are too early for preflowers, cuts are commonly taken and then put in flowering conditions to determine the sex of the parent plant.

 

Well, I have heard of that.
I just couldn't figure from the OP what they wanted.

@ bratgirl;
check this...
http://www.hipforums.com/newforums/showthread.php?t=153269&f=221

the area in the circles is what you want to check/look for early. They wont be as developed in a young plant, but often you can tell the sex.