Yellowing leaves in flowering stage!!

I have 3 plants, all outdoor uk. I am growing in soil. They are currently in 4th week of flowering. But 1 of the 3 plants leaves are yellwoing all the way over the plant. The buds are still gorwing though but i am unsure if they should be yellowing this early on. I am growing in soil. I used Green Fuse Grow for Veg and and using Plagron Bloom and PLagron Green sensation top activator for flowering. ALl other conditions are outdoor uk, please find pics attatched.

i cant tell you for sure but i hear alot of bloom nutes are too low on nitrogen, maybe try a feed with your veg nutes next watering and see how they go, but if your other plants are reciving all the same and are looking healthy then i mite be inclined to think its somehting else? this is just a guess really about your nutes, maybe read up threads on people using the same could help ya,

im in a similar boat. i know for a fact that some yellowing of the lower leaves is normal and to be expected. but since the bloom schedule for plants tells you to taper off on the veg nutes containing higher levels of nitrogen. i would suggest that if it spreads through more of your plant than the few lower leaves that you add more 'N' im currently in the process of doing the same thing. other than that your plants look good. goodluck

looks like a N. def to me as well. like said above most blooms foods are to low in N. witch means to use veg nutes for the 1st few weeks of flower, the plant uses alot of N in those weeks as they stretch a lot. i would hit them with some veg nutes mixed with your bloom

You have switched to a bloom formula too early. They need N your plants are hungry.

that has N deficiency; its lime green, the lower leaves are yellowing and dieing. dont cut off any leaves, even the yellow ones do photosynthesis. yellow is the secondary pigment, and purple is the 3rd. what is the npk of the bloom nutes? i think its best to only use bloom nutes during the last 4 weeks of flowering. K should always be the highest nute. it regulates water(water intake is really important for other nutes too), and it is the essential nute for the fruit of any plant, for example when oranges dont get enough they are golf ball sized. giant pumkin growers focus on K above all else!

Just feed it some veg food, plants gobble tons on nitrogen at beginning stages of flowering, like the posters said above... You just lacking some nitrogen. You can foliar feed with a veg food that is higher in N and after a few feedings then the yellowing will stop

scheduals are.... un-wise to follow.... they cause all these false beliefs. your plant will tell you what it wants so please don't deny it, or else you'll just be harvesting less in the end

I completely agree with you dirty, those schedules SUCK.. I have tried FF's and advanced nutes feeding schedules and they are both WRONG. FF tells you to cut growbig (which is higher in N) at first flowering and when I did this I got yellow fan leaves quick. Advanced will tell you to overfeed , so like dirty said you have to learn to be able to read your ladies and know what they want. And those ladies want some nitrogen