Flowering TrainWreck turning yellow (pics).

My Trainwreck has been flowering now for about 3 weeks and has been turning yellow but now is getting really bad.

It's been under a 250 watt hps and has a fan blowing on it, i have just given it 1/4 dose of Big bloom and Tiger bloom about 2 weeks ago and flushed it about a week ago. My guess is that is a nitrogen def. But im not sure.

Can someone give me any advice on what it might be? Thanks

calicannabis said:

My Trainwreck has been flowering now for about 3 weeks and has been turning yellow but now is getting really bad.

It's been under a 250 watt hps and has a fan blowing on it, i have just given it 1/4 dose of Big bloom and Tiger bloom about 2 weeks ago and flushed it about a week ago. My guess is that is a nitrogen def. But im not sure.

Can someone give me any advice on what it might be? Thanks

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I'd definitely say N def. What are the ratios for your nutes?

Give it a shot of veg fert next time, instead of bloom. It'll prevent the damage from getting any worse.

Ummm.. the foxfarm schedule says to give grow big (nitrogen) weeks 3-4 in flower... thats why you have a N deficiency!

Follow the schedule!!

http://www.foxfarmfertilizer.com/soilfeed.pdf

blahblahblah123 said:

Ummm.. the foxfarm schedule says to give grow big (nitrogen) weeks 3-4 in flower... thats why you have a N deficiency!

Follow the schedule!!

http://www.foxfarmfertilizer.com/soilfeed.pdf

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It looks more like a sulfur deficiency because the bottom leaves still look green. It could have both a Nitrogen and sulfur deficiency though. Regardless, you need to up the nutes. Good luck.

I know most nutes you have to still feed some grow in the mix .

Like my Gen Hydro . 3part system i use all 3 parts up till the 3rd week flower ...

Id feed it sum grow nutes

If you only fed them 1/4th strength nutes one time two weeks ago its amazing they are as big as they are.. impressive genes.. start doing that every other watering and add some grow big for a week or so.. bet it will just explode

calicannabis said:

i have just given it 1/4 dose of Big bloom and Tiger bloom about 2 weeks ago and flushed it about a week ago.

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i dont think its helpin any that he just flushed a week ago ..

have you fed it since you flushed it. if not shes super hungry and that could explain whats goin on as well

Yeah I would say sulfur also, if you had a N def then it would start at the base leaves not mainly middle and top...just my opinion though

Not sure why there was a need to flush unless he over fed them, other than that they probably just need to be fed a heavier dose more often...still that some good flowering production for 3wks

BluffinCali said:

Yeah I would say sulfur also, if you had a N def then it would start at the base leaves not mainly middle and top...just my opinion though

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Sulfur deficiency starts from the back of the leaf on forward to the middle of the leaf..

Nitrogen deficiency will start from the tips and work its way back to the leaf node..

Exact opposite of eachother.. looks like it starts at the tips to me.

Good point, more than likely your right, you should check the ph to get an idea of where your at...give the plants some grow nutes and I bet youll see a big difference

Thanks for the advice BluffinCali & Blahblah123 i plan on giving it 1/2 dose of FF Grow Big the soonest i can get it would be tomorrrow, sound good?

It's looking scary yellow next to my other plants, but the buds are forming nicely.
Would i be able to spray the foliage (FF Grow Big) to speed up the process?

calicannabis said:

Thanks for the advice BluffinCali & Blahblah123 i plan on giving it 1/2 dose of FF Grow Big the soonest i can get it would be tomorrrow, sound good?

It's looking scary yellow next to my other plants, but the buds are forming nicely.
Would i be able to spray the foliage (FF Grow Big) to speed up the process?

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Well, first off id note that if you've really only given it one fourth strength feeding 2 weeks ago.. that is a DAMN impressive result, she looks beautiful for being so deprived

The yellow leaves prolly wont recover, but from the looks of it you have enough foliage to finish out with a respectable yield, so no worries~

Just keep givin it some N until week 5 starts and i bet shes happier.. i dont think you can use grow big as a foliar.. i may be wrong though, id just use it normally