the yellowing leaves that are falling off ,dont get too worried about it ,you will find that some of he plants leaves will fall off ,the yellow colour is just that the plant has been taking all the nitrogen from that leaf and its the plants natural way to discard the used leaf ,this is perfectly normal try not too worrie ,the only other thing that could cause yellowing is a magnesium deficency which is curable with epsom salts
cheers all
busteruk7 Reviewed by busteruk7 on . lack of nitrogen, when to start giving more p hi guys, im on the 4th week of my second grow... got 6 females out of 10 so im pretty stoked! the plants are doing alright however they are starting to get yellow not so healthy leaves at the bottom.... i know you are supposed to give the plants more Nitrogen during vegetative growth but when is it time to start cutting that down? because i started giving the plants a supplement of P + K (P-8 K-4) 2 weeks into the flowering and thats when the leaves started to get yellow so a couple days ago Rating: 5