Dying Leaves, Red Stems, Curling tips and yellowing during Early Flowering

Hi all,

First time grower here. I'm in week 3 of flower with my Bruce Banner, grown in coco. She's been an extremely healthy looking and fast-growing plant until just recently, when I started to notice some brown/ dying spots. They don't seem to match any nutrient deficiency or excess I've seen on the internet.

I'm using FF Tiger Bloom 2 tsp/gal, Big Bloom and Cal-Mag 1 tsp/gal, PH 5.8-6.5, under a 1000w hps. The problem started on my oldest fan leaves and seems to be spreading to new growth, starting with brown curled up tips. I also noticed that all leaves experiencing this have reddish purple stems, while all the healthy growth has green stems. Please help!!

running out of nitrogen?
I feed some even in flower for the first few weeks and this blight stopped for me.

chemphlegm said:

running out of nitrogen?
I feed some even in flower for the first few weeks and this blight stopped for me.

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Thanks for the quick reply- You were experiencing the same dark brown spots as well? I could be wrong, but I was under the impression a nitrogen deficiency would just cause the leaves to yellow severely.

Mik D said:

Thanks for the quick reply- You were experiencing the same dark brown spots as well? I could be wrong, but I was under the impression a nitrogen deficiency would just cause the leaves to yellow severely.

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I'm only guessing with the available info. I see your nutrients dont have much N in them, I assume you changed to bloom at the light change(?) and this is what happens half way through flower without some extra N at least at onset.

I believe that growers change lights and believe this is when flowering begins, so they change to flowering nutrients. In fact the plant could take weeks to begin flowering and during that time needs even more nitrogen than prior weeks, while being robbed by what growers think the plant wants, then add in the early harvesting results

chemphlegm said:

I'm only guessing with the available info. I see your nutrients dont have much N in them, I assume you changed to bloom at the light change(?) and this is what happens half way through flower without some extra N at least at onset.

I believe that growers change lights and believe this is when flowering begins, so they change to flowering nutrients. In fact the plant could take weeks to begin flowering and during that time needs even more nitrogen than prior weeks, while being robbed by what growers think the plant wants, then add in the early harvesting results

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You are correct in that I switched to bloom nutrients right when I flipped to 12/12, although it seemed like flowering started within just a couple days. I guess I'll throw in some extra N and see if she likes it.

I'd use dose of your "grow" formula instead of bloom with your next feeding, or half/half even might be better.

I also always continue veg nutes (all organic) during the first 3 weeks of 12/12 the plant stretchs and packs on bud weight which requires lots of N, I dont start dosing the flower organics until the 3rd week, here is my girl at 52 days of flower.

tpc_mikey said:

I also always continue veg nutes (all organic) during the first 3 weeks of 12/12 the plant stretchs and packs on bud weight which requires lots of N, I dont start dosing the flower organics until the 3rd week, here is my girl at 52 days of flower.View attachment 3998958

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the tiger bloom can be used carefully with success in soil along with other soil amendments

but in coco your looking for nothing but problems

tiger bloom is almost all P

look at the three numbers on the bottle, 2-8-4...N-P-K.... P is by far the highest number and N the lowest

do yourself a favor

get general hydroponics flornova grow/bloom

2 bottles and the directions on the bottle are good

1 bottle for veg= grow
1 bottle for flower = bloom

and you don't need anything else...

its well balanced, complete and crazy easy

im4satori said:

the tiger bloom can be used carefully with success in soil along with other soil amendments

but in coco your looking for nothing but problems

tiger bloom is almost all P

look at the three numbers on the bottle, 2-8-4...N-P-K.... P is by far the highest number and N the lowest

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Thanks for the advice. So you think switching to floranova would prevent this problem from continuing?

Mik D said:

Thanks for the advice. So you think switching to floranova would prevent this problem from continuing?

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yes