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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. Deficiences
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
GreenCosmos
Calcium deficiency?
Saw this little brown/yellow parts today. She is in BioBizz LightMix Soil and gets 0.3ml/L BioBizz CalMag 3x per week. pH is above 6.5 . Today I gave her 1ml/L CalMag. Was this the right choice? Is this a calcium deficiency?
Leaves. Color - Dark-brown
Feeding. Deficiences
3y ago
2
2
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. Deficiences
6y ago
1
2
Solved
Bembeto
Hojas raras
Algo le pasa a las hojas, no se si sera carencia o hongos. Me dan una mano?
Week 7
Leaves. Color - Dark-brown
Other. Mold
Feeding. Deficiences
5y ago
4
2
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. Deficiences
5y ago
2
2
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. Deficiences
4y ago
10
11
Solved
Lancelot420
Help me please
Herkese merhaba ! Şu an çiçeklenmenin 2.haftasındayım ve 1 aydır bu sorunla uğraşıyorum sorunun kaynağını bulamadım ne yapmalıyım? Yardımınız için teşekkürler :)
Leaves. Edges burnt
Leaves. Color - Dark-brown
Feeding. Deficiences
4y ago
3
6
Solved
FireRGB
Blätter verfärben sich komisch oder trocknen aus?
Bei 1 von 4 Pflanzen verfärben sich die Blätter an manchen Stellen. Ich benutze Biobizz Produkte und gebe den restlichen Pflanzen das gleiche! BioGrow - Bioheaven - Biobloom - TopMax - und PH down verwende - gewässert wird mit 6.2 Was ich verstehe das es eine "immobile" Problem
Leaves. Color - Dark-brown
Feeding. Deficiences
4y ago
2
Solved
lonergrower
Brown rust spots on oldest leaves
Brown rust spots on oldest biggest leaves with curling inward - the rest of the flower is fine, just some occasional small yellow spots. No sign of pests. Maintaining pH ~6.5 but have soft water. Suspect cal/mag deficiency or nitrogen toxicity. Thoughts?
Week 4
Leaves. Curl up
Leaves. Color - Dark-brown
Feeding. Deficiences
1y ago
7
4
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. Deficiences
6y ago
4
3
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. Deficiences
Techniques. Topping
2y ago
1
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. Deficiences
5y ago
3
3
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. Deficiences
6y ago
4
3
Solved
jbirdstheword
Burn, deficiency or other?
I’m completely stumped as to why my one plant is showing signs of deficiency or burn. Used the exact amount of fertilizer per plant. One plant is fine and the other looks terrible. I used a half dose of cal mag and it seems to have stopped but is not drinking or looking better.
Week 7
Leaves. Curl down
Leaves. Color - Dark-brown
Feeding. Deficiences
5y ago
3
2
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. Deficiences
5y ago
2
2
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. Deficiences
5y ago
2
4
Solved
Germaican
What deficiency is this ?
What is happening to my plant right now ? I believe it is calcium deficiency also could be Manganese from the pictures. I did not add CalMag during the first weeks. Usually Calcium deficiency shows after 4 weeks and during flower but not likely in soil. Started around 6th week
Week 7
Leaves. Color - Dark-brown
Setup. Strain - Autoflowering
Feeding. Deficiences
2y ago
5
3
Solved
growbert76
Is this really a potassium defiency? Any suggestions how to deal with it?
Hey Guys, need your help please. It's FD 28 and the leaves of my three White Widows show some signs of a nutrient deficiency (at least my assumption).I'm growing in living soil w/o any additional fertilizer and watering with a 7:3 mix of osmose/tap water and 0,5 ml/l CalMag.
Week 8
Leaves. Color - Dark-brown
Leaves. Color - Mottling
Feeding. Deficiences
3y ago
4
4
Solved
XanHalenTGI
Progressive rusty spots on leaves
been upping calmag .5 each feed, still getting worse, if not calcium deficiency... what is it? should i keep upping calmag? running 2ml/gal currently. bud development is still good, not stunted, good structure and trichomb production, great smell.
Week 7
Leaves. Color - Dark-brown
Other. General questions
Feeding. Deficiences
1y ago
18
10
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. Deficiences
6y ago
2
4
Solved
forgettenseedling
Leaves getting brown, can someone help me out? What does the plant need?
Leaves. Color - Dark-brown
Feeding. Deficiences
4y ago
1
1