The Grow Awards 2025 🏆 
By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
Accept
Brown spots on some leaves
EvilGrowerstarted grow question 5 years ago
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?
likes
Similar Grow Questions
Solved
yoinky_sploinky
Browning on leavesonly biggest fan leaves are affected
It looks like Cal-deficiency to me
What do you guys think?Week 8
Leaves. Color - Dark-brown
4 months ago
2
3
Solved
ivanosch
Dry yellow and brown leavesAll plants get same nutris and water, what is the problem with some of them?
Need help
600ppfd
69 f
55-60 humi
Ec 1,2 plagron grow + root powerLeaves. Color - Yellow
Leaves. Color - Dark-brown
4 months ago
3
Solved
JSanchezz
Can this be cal/mag?Week 7 flower
Just wondering If this is Cal Mag defficicancy?
To know this for the next growLeaves. Color - Dark-brown
4 months ago
3
Solved
cooci
PEST OR NUTRIENT PROBLEM?GG#4 FEM. 2nd week after the flip to flowering. New growth doesn't seem to be affected.I can't tell if it's a nutrient or a pest problem. Overall info: 18-23°C, RH 60-70%, 6 weeks old, used synthetic nutrient for veg 7:7:6 NPK, idk should I cut off affected leaves, pls help thxLeaves. Color - Dark-brown
Setup. Strains - Photoperiod
Techniques. LST
5 months ago
2
Solved
RecordSet
Brown Spots DiagnosisI need some help diagnosing these brown spots please! I am considering light burn, calcium deficiency or maybe PH imbalance.
PH is usually around 6.8, humidity near 60%, temps averaging 27°C/81 F, light distance at 25 cm, nutes and water schedule is disclaimed on my current growLeaves. Tips - Burnt
Leaves. Color - Yellow
Leaves. Color - Dark-brown
5 months ago
2
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
5 months ago
1
Solved
Hix57
Ma plante présentes des tâches sur les feuilles ainsi qu'un jaunissement commençant part les extrémités.
Elle a récemment reçu pendant une semaine de l'eau claire.
Sinon la plante de se porte bien.
Des idées concernant ces taches ?
Dans l'attente, merci d'avance pour vos réponse.Week 9
Leaves. Color - Dark-brown
5 months ago
4
3
Solved
Alpha_Green
…a few dark small spots or dots at the tips of the leavesHello dear congregation! Maybe some of you know what the following leaf symptom can mean:
Very few leaves have a few dark small spots or dots at the tips of the leaves. Plant looks vital.
Plant is in bloom.
Thank you 🙏Week 9
Leaves. Color - Dark-brown
5 months ago
3
2
Solved
weefi
Brown parts on more and more leafesI see more and more brown parts on the leafs of Sour Diesel (only) any idea what the issue might be? For reference see also my pictures of SD.
First idea:
Added 1 liter banana extract(to get Potassium) added 2 liter water and 2,5 ml CalMag.5 months ago
6
3
Solved
dabestgrowing420
Brown spots on leavesHi, some white widow auto leaves have these brown spots and some burned edges and tips. What deficiency or toxicity is this? Growing organic, using biobizz nutes.Leaves. Edges burnt
Leaves. Color - Dark-brown
5 months ago
1
Solved
Strombelete
Brown Spots on Leafs, veg and flowering, CalMag Def or overfert?Hi,
I have been running 2 Sensi Skunk Autos and 2 Sensi Tang Sugar with 43 days. Soil is All Mix and Nutes from the BioBizz line.
9l pots and watering every 2-3 day with 1l water. Ferts every watering like this: 1l - 1,0ml BioGro/1,8 BBloom/2,0 ActiVera/1,0 Top Max/1,0 CalMag
ThxLeaves. Color - Dark-brown
5 months ago
3
1
Solved
Mrbeautiful420
Tropicana cookies purple(RQS)Do u guys think she will make it out ? I have done everything. I over fed it during the veg .Is Autoflower N she is in 75 flower from RQS. Tropicana cookies purple .will the THC downgrade or the taste ?Leaves. Edges burnt
Leaves. Tips - Burnt
Leaves. Color - Dark-brown
5 months ago
1
Solved
SmokinTees420
Browning leavesMy leaves are showing some brown spots 5 days post transplant. I also increased my light from 30% intensity to 80% intensity. I have them 18” away currently. Am I showing signs of light burn? I have since turned the light back down to 50% and I am not on a 18/6 cycleWeek 1
Leaves. Color - Dark-brown
5 months ago
5
6
Solved
tipsytapsy
Bud rot? Mold?My plant is a bit problematic ("quick one" Auto from RQS, outdoor balcony grow).
I'm a bit worried that I have to throw it out, therefore I would like to ask for your expert opinion. :)
1. Is the "brown stuff" on the top bud "bud-rot"?
2. Are the "more intense white spots" mold?Buds. Other
Leaves. Color - Dark-brown
5 months ago
2
2
Solved
JeyGanesha
Macchie di ruggineEcco adesso si vedono le foto. Growers ho trovato delle macchie di ruggine su 2 foglie della Apple strudel.da cosa dipende??Leaves. Color - Dark-brown
6 months ago
2
Solved
TschupZ
Possible lockout, what could've caused it, all 3 get the same water & feedingHey, i'm new as grower and really glad about any tipps
I got some rusty spots + pale looking, tested the runoff and need help reconstructing on what went wrong
IN: 2l Osmosis + 0,6ml calmag + ph down 7 - 6,5
-Ph: 6,5
-ec: 540
OUT: ca 200ml
-Ph: 5
-ec: 630Leaves. Color - Dark-brown
Setup. Strain - Autoflowering
Feeding. Deficiences
2 months ago
5
4