Disease or Deficiency?? Dying yellow leaves. Help please

Cashola

Cashola

Member
Hi guys. I'm really stumped here. I've tried epsom salts thinking its a mag def, the ph is just under 7. This yellowing happens starting at the bottom, then eventually takes over the whole plant, right into flowering. Do you think it's a fungus or maybe a disease??
 

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Cashola said:
Hi guys. I'm really stumped here. I've tried epsom salts thinking its a mag def, the ph is just under 7. This yellowing happens starting at the bottom, then eventually takes over the whole plant, right into flowering. Do you think it's a fungus or maybe a disease??
Click to expand...
How far along into flowering are you?
 
This happens from young veg thru till harvest. The lower fan leaves slowly yellow then by second week of flowering or so, lots of them yellow and die off. That bud was picked at 9 weeks. Maybe I'm under feeding trying to be careful not to overdue it. If I hammer them with lots of food, they get really dark green/blue and look happy for the most part, but the leaves start to fold under, tips die, so I back off. It would probably help if I knew what strain these were and if the purple stems was normal.
 
Cashola said:
This happens from young veg thru till harvest. The lower fan leaves slowly yellow then by second week of flowering or so, lots of them yellow and die off. That bud was picked at 9 weeks. Maybe I'm under feeding trying to be careful not to overdue it. If I hammer them with lots of food, they get really dark green/blue and look happy for the most part, but the leaves start to fold under, tips die, so I back off. It would probably help if I knew what strain these were and if the purple stems was normal.
Click to expand...
I don't know what or how much you are feeding but try starting your feeds at 1/4 strength and work up from there. Pay close attention to how the plant responds. Don't feed with every watering. Try every other or every third watering. In the final 2 weeks stop feeding and just give plain water. The plant will start to yellow and leaves will die off in mid-late flowering because the plant is using up stored nutrients. The plant is actually dying as it reaches late flowering. This is normal and nothing to be alarmed about. Best of luck and welcom to RIU my friend.
 
Thanks Doc/Lumpas. I do work up 2 the nutes, could be more gradual I suppose. I work up to 1/2 strength 17-15-17 and 1/2 strength super B+ mix for Veg, then switch to 1/2 strength 12-34-12 + 1/2 strength super B+ for flowering up until a couple weeks pre harvest. I don't use any crazy bud hardeners. Need to get this problem figured out first. I also feed every other watering or so.

I'm very happy with the smoke, my chronic buddy with MS says it's killer haha. Do you guys recognize the strain? Afgani kush maybe? I'm a lightweight and just having some fun with it.

How about a disease or fungas? Or can I rule that out??? I've had some white leaves between margins that spells mag def rite, so I've got the PH meter and epsom salts to keep it in check.

Thanks much for the help. I've been looking around for months and experimenting trying to get this figured, but now I need to ask the pros here. The odd yellowing in veg is ok, but there's alotta crispyness in the buds thats not rite.

Appreciate the help doods
 
I think I'm on top of watering, heat, humidity, good light and ventilation. I'm using Promix HP, but just switched to Sunshine mix #4 (like it better so far). I've been experimenting with different size pots with no success so I don't think its a root bound thing. I rarely ever spray them and if so only ever in veg. I've got filtered air into flowering room. In summer here mid burn is about 88-90 at 30% humidity flowering. HPS is 18 inches away. Not sure what else I could add. I never pee in em, I talk to them. Should I try some rock & roll???
 
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