High flyin I'm glad you pionted out age not height like I said I'm not the best at explaining things.
nah... my general rule of thumb has been force them to find sexi heard from a botanist that you can get a ruff estimate of the sex by the distance between the leaves like a male it would be a longer area between them and a female would be grouped closer together is that true?
For new growers it is easy to find pics of female and male plants all over the place. However, I have not found a pic from an experienced grower such as yourself that has an explanation of what to look for (with arrows or a finger pointing) concerning a plant that is only 3 or 4 weeks old and not being pushed into flowering stage but showing signs of its sex.Or just look at the thousands already dowloaded and online already! GEEEEESH!!!! Let someone else do all the work!
i agree w/ you just put them on 12/and 12/,then return them to 18/6. after plants have 2 nodes put it in 12/12 for a week then return them to 18/6. they will sex faster. or start seedling on 12/12 and increase time every week until you get get to 18/6 just like april sun increases until june 21st. in april its around 12/12 anyway (depending where you live). but i keep my plants on 18/6 (after sexing) then put outside on june 21st (the longest day of the year)..I grow outside, guerrilla grow every summer. I germinate seeds in January. I put all my seeds in solo cups with pro mix. After they veg for two weeks I put them under 12/12 HPS. It takes about two or three weeks to sex. After they show sex I put them back in veg 18/6. In April I put two foot females in the ground also using pro mix and mycorrhizae. Since I guerrilla grow I also use terra sorb. Terra sorb is basically water crystals with different kinds of mycorrhizae. I only water them if it hasn't rained in two weeks. I used stored rain water. This has always worked for me. I never have problems with males. I do get a few hermied seed. I only had four hermied seeds out of six pounds.