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Back to Grow Questions
Manganese deficiency or rust?
Gemini_Grow
started grow question 6y 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 6y 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 6y ago
Textbook potassium (K) deficiency
1 like
Complain
Similar Grow Questions
Solved
Cannabeans
Brown dying leaves
What is going on with my leaves? Even the sugar leaves are starting to die. Sprayed with optic foliar switch to prevent male flowers popping up a few weeks ago so could be that.
Week 2
Leaves. Tips · Die
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
4
3
Solved
Asuratyr
Nutrient deficiency? If yes, what's the best course of action to salvage the situation?
First time grower of 3 autos, at week 8, lower leaves started turning yellow, top leaves started to get smaller/develop brown spots 2 weeks ago. Is this a nutrient deficiency problem? Soil should have been fertilized for 3 months, but I'm thinking they burned through it.
Leaves. Color · Pale
Leaves. Color · Dark-brown
Feeding. Deficiencies
5y ago
2
2
Solved
LukeLaBam
Emerging Issues - Week 9
At the beginning of the week, I noticed the tips of the leaves drying out. Now, one out of the four plants has completely yellow leaves. Could it be due to the increased Biobizz Bloom dosage? For more information, please check my journal. Regards.
Leaves. Color · Dark-brown
Feeding. Deficiencies
3y ago
4
4
Solved
guerilla
Calmag deficiency?
Hi all. Almost certain what this is. But just need reassurance please 🙂 I just need to confirm this can be fixed with calmag?
… Show more
Leaves. Edges burnt
Leaves. Color · Dark-brown
Feeding. Deficiencies
5y ago
4
5
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
Solved
minibox
Calcium or roots trouble?
Hello happy grower, New week and new trouble but on the second plant. Those brown dots appear today. Is it a cal/mag defficiency or roots trouble? I will check roots tonight. Thank you forward for your advise!
Week 6
Leaves. Color · Yellow
Leaves. Color · Dark-brown
Feeding. Deficiencies
4y ago
10
11
Solved
ssfm_ssfm
Are those nutrient defficiencies? Which ones?
A plant had interveinal chlorosis on new leaves and then proceeded to show brown patches between veins on middle leaves. Another has coppery brown spots on leaf edges on the middle of the plant. Both were rootbound in living soil (peat/perlite/hummus + ammendments).
Leaves. Color · Dark-brown
Feeding. Deficiencies
Techniques. Topping
2y ago
1
Solved
Dillsnills
Can someone plzz help with what is going on?
Can someone plzz help me w what's going on, not sure if it has to do with nute deficiency,nute burn, ph or what it's only w 2 of my plants a lemon autoseedmans Orange Sherbert Auto fast buds, should I trim the leaves that r affected or in general what can I do. Ph 6.5 wk6flowerin
Leaves. Color · Yellow
Leaves. Color · Dark-brown
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
Aonjacktallbeck
Ph problem?
Is this a ph problem or something else? My meter doesn’t seem to be accurate. I’ve been feeding top crop veg once a week and ph 6.3 (soil), my run off was a bit high, a gave just plain water (ph 7) but no help. Photos from two plants. Heeelp
Leaves. Color · Yellow
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
1
1
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
FiFrElOt
Demande de diagnostic
Hello, I'm currently in week 7, my problem has been going on since week 5 and I can't identify it... Has anyone ever had a problem like this?
Leaves. Color · Dark-brown
Leaves. Color · Black or grey
Feeding. Deficiencies
5y ago
2
2
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
Gemini_Grow
Manganese deficiency or rust?
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
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
1
2
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
5y ago
4
2
Solved
Jordan73
Phosphor mangel?
Phosphorus deficiency? I have 2 leaves that look like this.
Leaves. Color · Dark-brown
Feeding. Deficiencies
3y ago
1
1
Solved
GrowerNL
Rust on leaves PLEASE HELP!!
Rust on leaves i water with pH 5,8 EC 2,0 i grow coco EC runoff 1,8-1,9 pH runoff 7,0-7,5 but pH runoff coco is not something to rely on i don’t use calmag want to use it since this problem i have given him some pK today
Leaves. Curl up
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
1
Solved
Losqui
Spots on leaves
Hi mates, what do you think about those points.we are at 4 week flowering, soil and canna Flores. Are they insects bite or some nutrients issue? Thanks in advance
Leaves. Color · Dark-brown
Leaves. Color · Mottling
Feeding. Deficiencies
6y ago
1
1
Solved
densesensi
Did I nute burn my leaves?
I fed GH flora trio yesterday - introduced the bloom None of my other 2 plants have this. The other auto is the same age and fed the same dosage. How can I fix this? Or will it recover?
Week 5
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
1
2
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
7mo ago
1
4