Sexing Seeds

I started out with 20 seeds and got 10 females. I sexed all 20 plants with a 12/12-hour light/dark light cycle not knowing about taking cuttings. They flowered for three weeks before switching back to 18/6 light cycle. They have been on 18/6 for 3 weeks and the signs of female are not going away. Do the small clusters of female pistils shrivel up as it goes back to veg or do the little white hairs mature? Should I pinch off the small clusters of white pistils? Also, the top leaf branches turned red what does this mean?

I started out with 20 seeds and got 10 females. I sexed all 20 plants with a 12/12-hour light/dark light cycle not knowing about taking cuttings. They flowered for three weeks before switching back to 18/6 light cycle. They have been on 18/6 for 3 weeks and the signs of female are not going away. Do the small clusters of female pistils shrivel up as it goes back to veg or do the little white hairs mature? Should I pinch off the small clusters of white pistils? Also, the top leaf branches turned red what does this mean?
Luke

After all the stress these plants suffered, 50 percent came out female and they are still alive. Think about how cannabis plants have been growing naturally for millennia. The days are long in summer and short in the fall. The long nights and short days of autumn trigger the flowering process. When you play with Mother Nature's schedule, plants get confused, real confused. These ladies were close to half way through flowering and then forced to revert back to vegetative growth with shorter nights and 18-hour days. Generally plants take about a month to start to resume normal growth. Such a light shock will cost plants at least a month of lost growth and later the plants could continue to show stressed development manifested by more leaves and branches and leaves could have sporadic growth. The little white hairs or female pistils will likely stay there but will probably discolor.

Six weeks after germination you have a classic case of nutrient lockup due to buildup of fertilizer salts in the soil. The problem has probably been there for a week or two before showing a purple stem, outward signs of phosphorus deficiency and the grow room could be too cold at night or during the day. If this is the problem, it is provoked by clayey, acidic and soggy soil. Deficiencies are most common if soil pH is above 7 or below 5.8 and has excess iron or zinc and has chemically bound up phosphates. Or the redness could be a characteristic of the variety you are growing.

To remedy toxic nutrient lockup, flush your soil heavily with a very light high quality hydroponic fertilizer solution. Pour two gallons of one-eighth-strength nutrient solution for every gallon of soil in the pot. A 5-gallon pot would require at least a 10-gallon flush. All the bad locked up salts will be flushed out the drain. Set plants in a sink or a bathtub to facilitate drainage.