How To Use Progressive Web App aka PWA On 420 Magazine Forum
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If you are a seedling grower who does not clone, or a grower who has no seperate vegetative and flowering grow spaces, the easiest method is simply to wait for the preflowers (primordia), and sexual maturity to appear while the seedling is still in vegetative growth. In other words, if you wait until they are 6 to 8 weeks old, most plants will show you their gender without any forcing.
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This could have nasty affects on output. I would say veg as long as you can and some strains will actually show sex with out going into the flowering process totally. Use and eye loupe to help with the identification part. pistols will poke out. Some you can get away with doing this others...not so much. You can use any old jewl loupe.
30X Magnifying Loupe | Hydroponics