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Back to Grow Questions
Manganese deficiency or rust?
Gemini_Grow
started grow question 7y ago
Could it be manganese deficiency or rust? Few upper leaves are affected this ways showing some brown dots.. Could it be due to a PH fluctuation I had recently? Need some help
Solved
Leaves. Color · Dark-brown
Feeding. Deficiencies
likes
Trichsteppin
answered grow question 7y ago
I think lt looks like P abundance which will lockout Magnesium and calcium
1 like
Complain
Selected By The Grower
Athos
answered grow question 7y ago
Textbook potassium (K) deficiency
1 like
Complain
Similar Grow Questions
Solved
Mosherd7
Unknown rust on 7th flowering week
This started as what I thought was a cal/mag deficiency, bought some, gave it for a week at a good dose and 6.3ph, and this intensified and switched from just lower leaves to the upper and a few sugar leaves on one plant. Any ideas? May calmag takes awhile? Or wrong diagnosis?
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
1
3
Solved
born_it_all
Deficiency or excess of nutrient?
Hi guys, I need help please, i'm noob. What kind of deficiency/excess nutrient is that? Thanks a lot
Week 5
Leaves. Color · Dark-brown
Feeding. Deficiencies
4y ago
4
3
Solved
Greenbean420
Browning on leafs mid flower!?
Hey ive got browning on 2 plants leafs mid flower? Could this be a Calmag deficiency or is it normal? Only been using biobizz grow at 0.5ml/litre and bloom and topmax at 1ml/litre. Thanks!
Leaves. Color · Dark-brown
Other. General questions
Feeding. Deficiencies
6y ago
1
2
Solved
Goenndalf
More rusty spots
See this now on more and more leaves. Only upper fan leaves that get good light exposure seem to be affected from this and also the clawing. Have backed off the nutes completely for now and will add ground egg shells to the water in the hope its a Ca deficiency.
Week 8
Leaves. Curl up
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
1
1
Solved
Kripoulas
Deficiencies while in late flowering during flushing period
There is deficiency going on (looks like cal) she is an auto flowering strain in her 9th week and been flushed for a week now. Should I give her cal/mag and stop the flushing or is it too late to deal with that? She looks like she will be ready to chop in a week or so.
Leaves. Color · Dark-brown
Setup. Strain · Autoflowering
Feeding. Deficiencies
6y ago
4
2
Solved
FireRGB
Blätter verfärben sich komisch oder trocknen aus?
On 1 out of 4 plants, the leaves are discoloring in some spots. I'm using Biobizz products and giving the rest of the plants the same! BioGrow - Bioheaven - Biobloom - TopMax - and PH down are used - watered with 6.2 What I understand is that it's an "immobile" problem.
Leaves. Color · Dark-brown
Feeding. Deficiencies
4y ago
2
Solved
Bembeto
Hojas raras
Something is happening to the leaves, I don't know if it's a deficiency or fungi. Can you give me a hand?
Week 7
Leaves. Color · Dark-brown
Other. Mold
Feeding. Deficiencies
5y ago
4
2
Solved
elevensixty6
Deficiency?? Excess? Neither?
Grown this strain before and had the same issue.. not sure if its a CalMag deficiency entirely. pH has remained at 6.0-6.5 or so in soil and didnt show signs until recently, seemed to have worsened after just two days of only CalMag and Ro water so I bumped up the bloom nutes.
Week 5
Leaves. Color · Dark-brown
Feeding. Deficiencies
5y ago
3
3
Solved
TripleCcannabis
deficiency?
Is this a boron deficiency. If not whats going on with this girl
Week 4
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
2
Solved
N1xon
Calcium deficiency, cal-mag now in hand, water now, or wait for normal scheduled water? Last water yesterday.
Plants are suffering from an early stage of calcium deficiency, received a bottle of cal-mag today. Watered last night cause I didn't want to wait any longer. Should I wait for my next water (2 more days) or give a single dose of Cal-mag now, to get some calcium to the plant?
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
4
3
Solved
minigroww
Continuing calmag deficiency
What I think is a calmag deficiency started about 10 days ago. At first I thought it was too low PH (6.0 - 6.1), so I corrected that, but no luck. Then I started adding biobizz calmag, still no luck. It seems that the deficiencies are picking up speed again. Any ideas appreciated
Leaves. Veins · Yellow between
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
2
4
Solved
urbanbud
dark discolouration developing in flowering wk 3
howdy growbuds, noticing the pictured discolouration. hope someone w more experience/knowledge might recognise what's happening to my gals before it develops. advice/opinions welcome on if maybe nut burn/def, temp or ??? a heap more detail in entries to help diagnose. cheerz 🙏
Week 14
Leaves. Color · Dark-brown
Leaves. Color · Black or grey
Feeding. Deficiencies
6y ago
2
4
Solved
BigAdy
Is this a nute problem ? Brown spots at the top of one plant 4th week of flower
One of my girls has started to develop brown patches at the top of the plant in the 4th week of flower. Only seems to be one girls so far (out of 9). Soil PH seems ok and Im pretty sure its not nute burn. Appreciate any thoughts
Leaves. Color · Dark-brown
Leaves. Other
Feeding. Deficiencies
8mo ago
1
4
Solved
fiatchd
Leaf problems
I think I did use too much fertilizers, whats happening here? https://growdiaries.com/diaries/180523-grow-journal-by-fiatchd
Leaves. Color · Yellow
Leaves. Color · Dark-brown
Feeding. Deficiencies
3y ago
2
5
Solved
Lancelot420
Help me please
Hello everyone! I'm currently in the 2nd week of flowering and I've been dealing with this issue for a month now. I haven't been able to find the source of the problem. What should I do? Thanks for your help :)
Leaves. Edges burnt
Leaves. Color · Dark-brown
Feeding. Deficiencies
4y ago
3
6
Solved
TopNotchBud
Whats wrong with her?
I cant tell what's wrong with her. I recently upped my CalMag nutrients cause I originally thought this was a Calcium deficiency (full nutrient breakdown in diary). I dont want to hinder my harvest so any insight?
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
2
2
Solved
TschupZ
Possible lockout, what could've caused it, all 3 get the same water & feeding
Hey, i'm new as grower and really glad about any tipps I got some rusty spots + pale looking, tested the runoff and need help reconstructing on what went wrong IN: 2l Osmosis + 0,6ml calmag + ph down 7 - 6,5 -Ph: 6,5
… Show more
Leaves. Color · Dark-brown
Setup. Strain · Autoflowering
Feeding. Deficiencies
2y ago
5
4
Solved
Goenndalf
Rusty Leaves
3 upper fan leaves have "rusty" brown spots on the upper side. Hard to spot, hard to capture on camera. I also have slight "clawing" on many of the upper leaves. Mg/Ca lockout because of nitrogen toxicity possible? Doesn´t seem to be fungi, as there are no spores to rub off.
Week 8
Leaves. Curl up
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
2
2
Solved
Fishcake
Black/brown spots
hi all its currently day 14 of flower i have noticed that there is spots on another one of my plants hope you guys could help me out
Leaves. Color · Dark-brown
Leaves. Color · Black or grey
Feeding. Deficiencies
6y ago
2
2
Solved
Accidental_Grower84
Orange spots on fan leaves
What are these spots due to? I was using pH 6.5 tap water and bud candy 1mL per L for every watering. Just water from now on. Should I worry? 2 weeks left before harvest
Week 10
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
3
3