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Back to Grow Questions
Leaves have brown spots
Flyalivebeats
started grow question 5y ago
Any idea what these brown spots could be?
Solved
Leaves. Color · Dark-brown
1 like
Roberts
answered grow question 5y ago
You are experiencing progressive potassium deficiency. Light nitrogen and heavy potassium are phosphorus in flowering. Good luck🌱
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Selected By The Grower
Coopmc
answered grow question 5y ago
You should find answered hear I sugest finding a feed scheadual and follow it
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Coopmc
answered grow question 5y ago
https://www.royalqueenseeds.com/blog-cannabis-nutrient-and-deficiency-table-n88
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Coopmc
answered grow question 5y ago
https://www.botanicare.com/faqs/can-i-foliar-spray-with-cal-mag-plus/
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Coopmc
answered grow question 5y ago
https://growace.com/blogs/learning-center/how-to-fix-nutrient-lockout
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Flyalivebeats
answered grow question 5y ago
So what should I do?
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Similar Grow Questions
Solved
JohnDee
Hello 1st Grow. 4 plants all auto. 3 Critical purple and one tangerine dream. I only used fox farm big grow and altho they are auto, One or two of them sretched big time and I switched to 12/12. And trellis netting for even canopy. Bloom : Flower Fuel. 1 lleave end burn & dry?
Week 1
Leaves. Color · Dark-brown
8y ago
6
4
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. Deficiencies
3y ago
4
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Solved
Lapolda
Deficit?
Hello, everyone. Thanks in advance for the advice. Is this a nutrient deficiency?
Week 12
Leaves. Color · Dark-brown
4y ago
1
Solved
ClaireCrystal
Skittles plant with brown spots
One of my skittles plants is starting to get these brown spots with a yellow outline. Any advise is appreciated!
Leaves. Color · Yellow
Leaves. Color · Dark-brown
4y ago
1
4
Solved
shasam
Golden/Brown dots on leaves .. HELP :(
Can someone please help me identify what this is and how to fix it? I assumed it’s nute burn but that would probably hit the tips no? Any help would be greatly appreciated.
Leaves. Color · Dark-brown
6y ago
2
3
Solved
Frosty_farm
What is the limits ( humidity and temperatures) for my auto white widow?
Week 2
Leaves. Color · Dark-brown
8y ago
5
4
Solved
Coconut_kiss
Discoloration and brown tips
Nutrient burn or something else?
Leaves. Color · Dark-brown
6y ago
1
4
Solved
KCduzit
Brown spots on bud site leaves?!
halfway through flower and now in week 6 flower one of my plants is showing some large brown spots on only the upper leaves. I’m not sure if it’s a light or ph issue as the light is close. I stopped cal mag and some nitrogen this week but spots were showing up before.
Week 14
Leaves. Color · Dark-brown
Leaves. Other
6y ago
2
2
Solved
Skylife
Brown dots on leafs
Just checked on my girls, and noticed this slight brown mark on 2 leafs... what is this?
Leaves. Color · Dark-brown
Other. General questions
6y ago
4
Solved
GreenGrocerN4
Any Idea's on the issue?
Found a brownish mark on a couple of big fan leafs, I'm assuming its a nutrient problem but not sure any help would appreciated. Thank you. 100w LED Bio Grow 2ml/L
Leaves. Color · Dark-brown
6y ago
1
1
Solved
Kjf_grows
Help, first time with autos
My ladies are 11 days old and I woke up to this. Last fed 2 days ago with a and b by coco at 50%, ph at 5.9 I have done a quick flush and the run off came out at 6.1 temps are a constant 25°c with a humidity of 60%. All plants are currently under a 400w mh bulb.
Leaves. Color · Dark-brown
5y ago
3
Solved
Dr_Perl_Junior
Cal-Mag Def?
Hi People! So I found those Spots on my Leafs...They are also very dry . Is this a Cal-Mag Deficiency? Week 4 of Veg is about to begin and I was planning to send them to Flower in about 10 Days. Any recommendations on how to manage this properly?
Leaves. Color · Dark-brown
Other. General questions
2y ago
2
Solved
dillande3
Dry/Rot look on new LH day 52 from seed, Placing outdoor for week or 2 until I get proper Tent LED's
Day 35 Veg LH, issues, with lower branches, some of the New Toppings and Leaves looking dry/rot maybe over watering which i have no idea, it was under white CFL Bulb's and was inside 2x2 cupboard (MDF) and no control of RH, for 1-2 weeks, Going to put it outdoor for a week
Week 8
Leaves. Dropping off
Leaves. Color · Dark-brown
Leaves. Other
4y ago
1
2
Solved
LEAFJE
Brown spot and crispy ends
Dear Growmies, My leaves, mostly the top fan leaves haves started to get brown and yellow spots. And even turn crispy to the point I can snap of the tips. I already increased Calmag from 0,5ML/Liter tot 0,75ml. I have been watering between Ph of 6,2 and 6,2. Any ideas ?
Week 7
Leaves. Tips · Die
Leaves. Color · Dark-brown
Setup. Strain · Autoflowering
5y ago
3
4
Solved
Complicate
Is this turning purple from temp change
So it looks like what I thought was a brown spot (under the grow light), appears to be purple when I pulled it out to get a better look and stake it down. I did switch the light to something cooler, could this be from temp dropping. Not worried yet, just curious. Thanks
Week 4
Leaves. Color · Dark-purple
Leaves. Color · Dark-brown
6y ago
1
1
Solved
sashagrow
Brown spot on leaves
I'm experincing a bad situation. Leaves are becoming brown in the margins and I can't understant exactly the cause. Probably there are more causes, some phosphorus deficiency caused by low temperature but I'm not sure that's the only diagnosis. Someone could help me?
Week 14
Leaves. Edges burnt
Leaves. Tips · Burnt
Leaves. Color · Dark-brown
6y ago
2
2
Solved
RaS_Audio
My plants are suffering a Phosphorus deficiancy due to lockout due to low ph of soil. My first flush only helped for a while. As soon as the medium gets too dry damage resumes. what should I do? I went to check on them today and the amount of damage they took in 24 hours was bad.
Week 6
Leaves. Tips · Die
Leaves. Curl up
Leaves. Color · Dark-brown
6y ago
1
2
Solved
Magic43562
Brown spots
Brown spots only on 1 leaf, is this a problem? Wasn’t there this morning
Leaves. Color · Dark-brown
6y ago
4
3
Solved
onefox
Nutrient burn
crazy burning on the big plant. I'm not sure what I'm doing wrong here. I cut the nutrients back to 7ml/gal today. This is after the trimming the worst leaves
Week 1
Leaves. Color · Dark-brown
6y ago
1
1
Solved
BoboLacetti
help in Hydro RDWC/DWC
Hello, my plants are now about 4 weeks old. The leaves droop and curl. The spots on the leaves are increasing. Is the PPM value too high? It's 1000ppm tds They grow in an RDWC system with top feed. The top feed is permanently switched on. Can that lead to problems?
Leaves. Curl down
Leaves. Color · Dark-brown
Roots. Color · Brown
2y ago
1
2