Yellowing plant in flowering.

[Homergrower]

I've got 2 girls about 1 week into flowering. They have been in the same conditions all their lives, but one is much yellower than the other.
Please help, as i don't want it to die or something before i get the buds off, and they have another month or two to go yet.

[Ganja Guerrilla]

certainly a nitrogen def, Id like to know what the PH runoff is?


feed with Miracle-Gro® Water Soluble Bloom Booster® Flower Food NPK 15-30-15 , or any other bloom ferts high in Nitrogen your plants need a good shot of nitrogen to get you thru the period

[Homergrower]

I gave it a shot of Urea about a week ago, but it doesn't seem to have helped.

Whats weird is there is new growth that is coming out very green, and healthy looking, but all the leaves behind it are yellowing.
This is happening more around the bottom half of the plant, the top half looks really healthy...

[Homergrower]

Originally Posted by Ganja Guerrilla

certainly a nitrogen def, Id like to know what the PH runoff is?


feed with Miracle-Gro® Water Soluble Bloom Booster® Flower Food NPK 15-30-15 , or any other bloom ferts high in Nitrogen your plants need a good shot of nitrogen to get you thru the period

is't 15 a bit low on the scale if it's a nitrogen problem.
My vegging nute has a N rating of 26. SHould i go back to using that or add some of this bloom booster. ??? Why would thi splant be yellowing bad, and the other one seems fine.

[Ganja Guerrilla]

is't 15 a bit low on the scale if it's a nitrogen problem.

no I think 15 is high..... too much nitrogen can cause the plant to shock back into veg state. some strains are very sensitive to nitrogen when they are in the flowering stage and can easily revert

My vegging nute has a N rating of 26. SHould i go back to using that

again no....time to add more phosphorus if anything and a bit of nitrogen to get the plant thru.

Why would thi splant be yellowing bad, and the other one seems fine.

answer my PH question and you may get your answer<!-- / message --><!-- sig -->

[Homergrower]

Ok thanks for all your help i'll do a PH test this afternoon when i get home and i'll post the results. Just on that note, I've been only watering with rain water/distilled water, but it has had the occasional spray from the hose. I have all the necessary ingredients to ajust the soils ph. Cheers