Solarscar said:

Hi fellow farmers.

Growing an 8 week strain and currently in 5 1/2 weeks of flower.

I am curious to know at which week into flowering is yellowing of the lower fan leaves that progress up every couple days, normal to the degree that harvest won’t be affected to negatively?

some say normal and others say more fertilizer is needed. I know there is a balance between the low end of feeding where deficiencies crop up (and likely making it to harvest) and burning your plant (which kills them and unlikely having much of a harvest at all)

my plants are at day 35 into flower and showing yellowing leaves beginning from the bottom. I’m on a 1/2 strength fox farm trio feeding schedule where I’m watering this in about 1 time a week (or every other watering)

any recommendations for this super common issues around the 5 week of flower?

thanks and happy farming

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Philart said:

I'd say those plants look pretty good to me. I grow in a personal compost based mix, it starts off very nitrogenous and I don't add anything apart from a molasses tea and occasional epsom salts. I find the lowest leaves which are the oldest, will yellow after a few months and shrivel. Midway through flowering the plant naturally grabs nitrogen from the leaves so that by harvest time all but the sugar leaves and a few younger one's near the top are yellow and dried out.

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Philart said:

I'd say those plants look pretty good to me. I grow in a personal compost based mix, it starts off very nitrogenous and I don't add anything apart from a molasses tea and occasional epsom salts. I find the lowest leaves which are the oldest, will yellow after a few months and shrivel. Midway through flowering the plant naturally grabs nitrogen from the leaves so that by harvest time all but the sugar leaves and a few younger one's near the top are yellow and dried out.

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Krispy420 said:

Hey this thread is a interesting question and something I've been thinking about a little bit the last few days as my plants have been yellowing what seems to be a bit early and excessive in my first indoor grow. I have very limited experience but I'll share some of my thoughts and include a couple plants from my first outdoor plants as an example.

I think generally speaking this is a complex discussion with not only a lot of factors involved, but alot of preference and opinion as well. It seems as though some people like to see a heavy fade on their plants by harvest to the point they look damn near dead and on their way to drying already and others like to keep them nice and green the whole way through. I'm kinda in the middle, I think generally if the plant is fading (apart from a self imposed flush) then it is ultimately saying something isn't quite right.


here's one of my outdoor plants. In a case like this I think the yellowing was fairly "natural" I trimmed it a couple times but just couldn't keep up with it and it had gotten too bushy and as a result i think some of the lower growth was being shaded and couldn't photosynthesize properly. Maybe a slight nitrogen deficiency too?? but apart from that the plant looked really happy.
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here's a different one of my out door plants where the yellowing looked alot less natural and plant looked less happy and more nectrotic. very obvious signs of patassium deficiency (as well as other probably) and had already spread throughout the whole plant all the way to the top. plant looked sickly and was quickly on it's way out sooner than I wanted.
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