The Grow Awards 2026 🏆 
Spots on leaves
Alwa26started grow question 5y ago
Can you tell me what causes these spots please?
Open
Leaves. Color - Dark-brown
likes
Answer
CheckThoseTrichsanswered grow question 5y ago
Heya!
I would say she's got a little nute burn from the dark green waxy leaves (N toxicity) and the burned tips (nute burn). I would either try to flush since you're using soil or just feed ph'd water next time.
Cheers and goodluck!
likes
Complain
Similar Grow Questions
Solved
Kluless
Yellow brown leavesAmateur HELP
Baby looking very unwell. week 3. Leaves yellow / brown. Normal soil led light 60cm water 1L a day with nutrients.Leaves. Color - Yellow
Leaves. Color - Dark-brown
5y ago
2
1
Solved
Bingeling
Brown patches on LeavesBrown patches starting to appear again on fan leaves.
Im using ph'ed water and have begun giving her nutes since last i saw the problem about a week ago. The problem seemed to go away, but has now returned og the newer leaves. Any ideas?
Lower leaf pic is the old damage.3y ago
2
5
Solved
ElevatedNoob
I am seeing an issue with the lower fan leaves and it seems to be progressing upwards. The leaves are yellowing and also seem to be turning brownish. I added CalMag into my last feeding but beyond that not sure what I should consider, info/advice is appreciated. See last pic wk5.Week 5
Leaves. Color - Dark-brown
6y ago
3
1
Solved
Complicate
Is this turning purple from temp changeSo 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. Thanks6y ago
1
1
Solved
ekkoz897
2 out of 5 plants are showing signs of nutrient burn? Soil growHi, I am seeing clear signs of nutrient burn but only on 2 out of 5 plants. I feed them organic nutrients, following the chart that was provided by BioBizz.
Why are they still showing burned leaves? I watered them thoroughly until the runoff was clear. But leaves keep burning.😦Week 9
Leaves. Color - Dark-brown
2y ago
4
7
Solved
Frm11001
No logro descifrar cómo arreglarlo - auto en DWC4 semana y media desde el comienzo, ph 6.0, ppm 600, incluye nutrientes base+calmag+silicium+trichodermas.
mismo problema durante toda la vegetación, en la 4ta semana incluí calmag y mas fertilizantes y pareció mejorar pero ahora vuelve a decaer.
Sobre fertilización? deficiencia?Leaves. Color - Dark-brown
4y ago
1
1
Solved
EvilGrower
Brown spots on some leavesHello! 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
Pisolo
brown spotsI'm finding this yellow spot all over the plant , mainly in the older leafs .
I'm using drinkable water pH 7 with really low nutrients , but it's an auto and in the last grow I almost overfed my auto with little more nutrients , What can it be , maybe the water with low mineralsLeaves. Color - Dark-brown
Leaves. Other
5y ago
7
6
Solved
Ag10KSA
Since i have bad judgment on colors ...Please can someone tells me what is the percentage of cloudy and clear colors in here?? This is 6 week fast flowering strain but she is starting week 8 in day 55 flowering..flushed 10 days ago tho .help plzWeek 8
Leaves. Color - Dark-brown
7y ago
4
6
Solved
TheIceCreamParlour
Check out my week 7 update for more info. Only one plant in the tent affected so it's really bugging me?!? Thought it was overwatering. Left them 2 days between feeds and they are bone dry and pots are light. Any suggestions or could it just be a trait of the Pheno?Week 7
Leaves. Color - Dark-brown
7y ago
1
4
Solved
BrannabisTHC
PH problems?Hey growers! These purple haze is in their 2nd week of flower. Only one of the two phenos are showing these symptoms. What might have caused this?Leaves. Color - Yellow
Leaves. Color - Dark-brown
4y ago
2
Solved
RasendeRollo92
Braune Flecken an den BlätternHallo zusammen,
Ich habe seit ein paar Tagen diese braunen Flecken auf den alten Blättern meiner Pflänzchen. Die Wochen zuvor habe ich gedüngt, allerdings nur mit 1 ml BioGrow, 1 ml BioBloom & 2 ml CalMag von BioBizz — denke eher es ist ein Mangel.
Vielen Dank für eure tips!Week 6
Leaves. Color - Dark-brown
9mo ago
1
5
Solved
HecticJardin
Brown patches on leavesNoticed these marks on the leaves of the plant I've had problems with.
Any ideas what they could be?
The other two are smelly amazing and the single plant is so sticky! I think it might be the cheesecake but I'm really not sure, I won't make the mistake of mixing them up againWeek 7
Leaves. Color - Dark-brown
5y ago
1
2
Solved
Zz066
Does she has phosphorus deficiency or this is another problem?Week 11
Leaves. Color - Dark-brown
7y ago
5
3
Solved
Kenny82
Browning sugar leafs on autoflowering skunk#1 during week 5vof flowerUsing soil and organic dry amendments, I'm doing autos and in week 5 of flower, noticed browning on my sugar leafs but don't no what I should do, should I leave it or should I try to sort it just not sure how?Week 5
Leaves. Color - Dark-brown
3y ago
2
4
Solved
jbirdstheword
Fungus or deficiency?I have these gals growing outdoors and have a few leaves that look like this. Appeared after multiple heavy rain days. Applied nutrients yesterday so I still need to wait for the results. Is this a sign of fungus or deficiency?Leaves. Color - Dark-brown
4y ago
1
6
Solved
jbirdstheword
Browning spots after H202 rinse.Hey guys! My first dwc and I’m having an issue. So after about a week my water was cloudy. I rinsed and washed the bucket, fixed the area where light was getting in. Then I rinsed my cube and plant with H202 3%, 1/3 to 2/3 water. Changed out nutes but now look like this. ?Leaves. Color - Yellow
Leaves. Color - Dark-brown
3y ago
2
3