That's why I like clones...I know their sex anyway...and they express it very quickly because they were taken from a mature female.....the length of time until maturity is much shorter....perfect for SEA OF GREEN
Clones have NO length of time til maturity, they were taken from a sexually mature plant, they keep all the same traits including maturity. You can flower a clone as soon as it is rooted.
Its really not necessary to have a scope and all that....
Just a pair of normal reading glasses... 3 or 3.5 x will help greatly......
12 bucks maybe...
Try that first.... The glasses come in handy for other stuff too..
While I have always heard that males show before females, I have never found this to be true. If I start a group of plants from seed, I always am able to pick out a number of females before the males start showing.
On my phone writing this, and this goes out to the OP who has a thai strain that doesn't show till 10 weeks. That's because its a tropical sativa. Those things take a LONG time to sex. Correct me if im wrong. Tropical sativas have the longest time frame from seed to harvest, so I would assume that early sexing will be a while...
If you need a jewelers loupe to see the preflowers, maybe just wait a few more days and save yourself the neck pain
I have a pretty strong magnifieing glass. I'm going to be paying attention and developing experience. This was a great find in a thread. I so dreaded all other methods!