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Back to Grow Questions
Leaves have brown spots
Flyalivebeats
started grow question 3y ago
Any idea what these brown spots could be?
Solved
Leaves. Color - Dark-brown
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Roberts
answered grow question 3y 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 3y ago
You should find answered hear I sugest finding a feed scheadual and follow it
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Coopmc
answered grow question 3y ago
https://www.royalqueenseeds.com/blog-cannabis-nutrient-and-deficiency-table-n88
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Coopmc
answered grow question 3y ago
https://www.botanicare.com/faqs/can-i-foliar-spray-with-cal-mag-plus/
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Coopmc
answered grow question 3y ago
https://growace.com/blogs/learning-center/how-to-fix-nutrient-lockout
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Flyalivebeats
answered grow question 3y ago
So what should I do?
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Similar Grow Questions
Solved
Gdubgrows
Brown spots on the Gold Leaf?
Brown spots with light yellowing. Possibly calcium deficiency? This is only happening on the Gold Leaf. Neither of the GDPs are showing these signs. This has happened over the last 2-3 days.
Week 4
Leaves. Color - Yellow
Leaves. Color - Dark-brown
2y ago
4
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Solved
EvilGrower
Brown spots on some leaves
Hello! I've noticed some brown spots on some of my leaves, localized to one half of the plant. Any ideas what this could be?
Week 7
Leaves. Color - Dark-brown
5y ago
1
1
Solved
newtextdocument1
Deficiens or too much huminidy?
Week 2
Leaves. Color - Dark-brown
5y ago
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Solved
bfcuk
I have noticed brown spots on a leafes, what is it ? overdose ?
Leaves. Color - Dark-brown
7mo ago
3
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Solved
Sitej
Brown spots
brown spots began to appear, could this be due to watering with PH 6.0, maybe too little and calcium is not absorbed? PH of water with each watering 6.0
Week 6
Leaves. Color - Dark-brown
2y ago
6
6
Solved
Elendil
Too much nutes?
Is this from too much nutes ?
Leaves. Curl up
Leaves. Color - Yellow
Leaves. Color - Dark-brown
5y ago
4
3
Solved
docpayce
Is this fungus infection or calcium deficiency?
Plant seems fine overall but shows brown spots on some leaves (new and old). Week 4 bloom in soil. 3l rain water pH adapted + CalMag to 250 µS/cm. Crazy Hills fert. twice a week (EC 1600 µS/cm). Water pH 5.0, drain pH 7.4, drain EC 1400 ... 1500 µS/cm.
Leaves. Color - Dark-brown
1y ago
1
1
Solved
WeedBerry
Leaves are brown could this be calcium deficiency?
Hi growers Can anyone tell me what this means
Leaves. Color - Dark-brown
5y ago
1
1
Solved
DeepWaterGrower
Brown spots on some leaves
Hi guys, today I found these spots on some leaves, few actually. I think it is an excess, in fact the EC in my DWC has been rising for a few days. Could you tell me more please? 😑
Week 9
Leaves. Color - Dark-brown
3y ago
10
8
Solved
Millyglock
Plant deficiency
So I’m doing dual root system and everything was doing so well and looking very green up to about 2 weeks ago all my fan leafs started to get really pale and spot brown, I’m not sure why and i just Can’t figure out where my problem is.
Week 8
Leaves. Color - Pale
Leaves. Color - Dark-brown
5y ago
1
1
Solved
Mysteriogo
Dead ?
Hello guys, My flowers seem dead, trichomes are not changing since 3 weeks. + Leaves are really horrible (that's broke my Heart) Do you think I should harvest ? That's really clear trichomes and not milky... Still thc in there ? Colombian jack strain, smth about week 27 ?
Leaves. Color - Dark-brown
Other. Harvest - Drying
3y ago
5
4
Solved
CroqueMonsieur
Brown spots on leaves. Can this be because of too high pH of the water (7.5)?
Brown spots on leaves. Can this be because of too high pH of the water (7.5)?
Week 2
Leaves. Color - Dark-brown
5y ago
5
2
Solved
Kripoulas
Deficiencies? Brown spots, yellowing and purple stems
What is this deficiency or maybe toxicity and whats the solution? She is fed with biobizz chart instructions but with every other watering. She is big so I'm guessing I should water with nutes every time? She showed this first week into flowering.
Week 6
Leaves. Color - Yellow
Leaves. Color - Dark-brown
Plant. Stem - Red or purple
4y ago
3
3
Solved
Shadowpup369
Leaf spotting
Is this a light burn issue or nutrient deficiency?
Week 4
Leaves. Tips - Burnt
Leaves. Color - Yellow
Leaves. Color - Dark-brown
1y ago
2
2
Solved
Guaxi
Gelato#33 looks sad
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Week 8
Leaves. Color - Dark-brown
Techniques. FIMing
3y ago
4
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Solved
GanjaGartenZwerg
Braune Blätter in Blüte
Pflanzen bekommen braune Blätter gedüngt wird mit BioBizz auf Erde die pflanzen standen leider ein paar Tage zu nass ich hoffe ich habe kein fusarium drinnen pflanzen sind schon seit drei Tagen nicht mehr gegossen worden und immer noch nass was kann ich ma
Leaves. Color - Dark-brown
1y ago
2
7
Solved
tangie
Yellow & brown spots in 2nd and 3rd week in coco-perlite nursery cup. What am I doing wrong? Fed until 20% runoff (extra), strained. Smth with roots?
2nd grow in 70/30 coco-perlite mix* & very similar issues w. yellow/brown spots in weeks 2-3, then stabilizes. *CalMag & pH buffered 6h @ 0.5mS, pH5.8, strained** & seed planted. Feed: W1: **Strained sol. + water 70/30, pH5.8 W2: AN M+G+B 1-1-1 + Simplex CalMag Plus 0.4mS Help
Week 2
Leaves. Edges burnt
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
6mo ago
9
6
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. Deficiences
5y ago
1
2
Solved
SupportiveMango
What nutrient deficiency is this?
What nutrient deficiency is this? Or is it nutrient burn? I'm watering with 5.5 PH using half strength Nutes, Root booster & Calmag. I don't think it relates to spiders mites since I can't see any with my 30x magnifier. Thank you so much in advance.
Leaves. Color - Yellow
Leaves. Color - Dark-brown
Other. Bugs
3y ago
3
3
Solved
Nightabsm
Leaves browning in multiple spots Lower leaves yellowing but have green veins.
One plants leaves are browning in multiple locations. I attempted to diagnose the problem with runoff tests. pH was 6.5 and TDS was around 900ppm, which was expected since they received nutes that day. Despite not spreading to other nearby plants, could it be leaf septoria?
Week 14
Leaves. Color - Yellow
Leaves. Color - Dark-brown
3y ago
4
4