I am into my 7th week of flowering having done 36 days on 12/12. All was fine up until about this time last week. I have the most severe deficiency with one of my strains but on multiple plants. Critical kush, grown in soil, vegged for 8 weeks. The most Wierd thing started happening to the leaves. Firstly small vibrant orange spots appeared towards the centre of the top sets of leaves, this has since engulfed the leaves within the vicinity and turned into a dark rusty brown. From this point I feared magnesium deficiency due to the tap water supply around here. But with me being so far into flowerin now in really worried its more serious. The leaves (once 80-90%) brown and crispy dry curl up at the tips. And then they almost just fall off the plant. They are starting to affect the buds tiny leaves at the very top causing maturation to slow down.. I'm really really worried as some have really slowed down growing and I really need some help..... Any suggestions based in what I have said? I've looked time and time and time again at common "defficiency lists and ways to try and diagnose them" and I keep coming back to either manganese, phosphorus or potassium..... Any help?!?!?!?!?
Please please help! Severe deficiency
- Thread starter E121bizzy
- Start date
ricky1lung
Well-Known Member
Maybe calcium.
Can you post pics so people can help you better?
Can you post pics so people can help you better?
ricky1lung
Well-Known Member
Ouch!
Im sorry E121 I dont know what that is, Im sure someone with more
knowledge will come by and help you out.
Thanks for adding pics, it will help.
Im sorry E121 I dont know what that is, Im sure someone with more
knowledge will come by and help you out.
Thanks for adding pics, it will help.
Ph 6.5, soil, canna terra Flores, house and garden bud xl, cal mag (as I thought it was Mg deficient, only started using about 10 days ago. Problem has progressed since) I ph adjust prior to every feed :/ 
. They are in 15litre pots, they get roughly 2 litres a day. I spoke to a trusted grow shop who advised I may have been watering/feeding when some weren't bone dry which could have lead to a P/K deficiency. When I feed them most are bone dry by the next day however the few affected ones (now I think about it) are still a bit damp on the top of the soil??? Hope this helps. P.s. It's only affected one strain (critical kush) my other strains at all fine???
. They are in 15litre pots, they get roughly 2 litres a day. I spoke to a trusted grow shop who advised I may have been watering/feeding when some weren't bone dry which could have lead to a P/K deficiency. When I feed them most are bone dry by the next day however the few affected ones (now I think about it) are still a bit damp on the top of the soil??? Hope this helps. P.s. It's only affected one strain (critical kush) my other strains at all fine???Thanks zzwasted I'm no expert whatsoever but I'm edging towards a P and K deficiency, in light of the fact that I stated my feeds that I use, shouldn't the plant be getting enough from my nutes?? If not can I use something like canna pk alongside my current feeds?? Thanks to all that have replied and posted any and all help is greatly appreciated.
zzwasted
New Member
you in coco then ? you might want to flush with straight ph'd water then wait for it dry up then continue feeding . if you carry on feeding atm it wont help it will just make things worse , just my 2 cent's im a noob in growing experience but iv done my homework . but nothing beats real experience .
are you using coco coir i guess ?? since your using canna nute's ???
are you using coco coir i guess ?? since your using canna nute's ???
I'm using biobizz all mix soil
I have a fan blowing on the top of the canopy. Temp readings 85.4F