Vote Now 🏆 for 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
Leaves Curling Up & Brown Spots
Galarihnostarted grow question 9 months ago
The leaves started curling upwards, turned brown about 2mm at the top and a lot of small brown spots appeared on the leaves.
I don't understand why or how...
Im using BioBizz nutrients, little less than recommended.
Watering every other day with 2L
PH 6.3
20°C - 24°C
Solved
Leaves. Curl up
Leaves. Color - Dark-brown
likes
Dabkinganswered grow question 9 months ago
That is Nutrient Burn. All things considered, it's incredibly common.
Especially because most fertilizers are too strong and even their "recommended" dosage you should cut in half.
That is either too much (P) Phosphorus, or excess (K) Potassium
Grindlife219answered grow question 9 months ago
i would check the ph of the soil and run off most likely its nute burn
likes
Complain
Similar Grow Questions
Solved
EelGrows
So closing week 7 now and my 4AM are showing signs of deficiencies again. I watered(with nutes) ph'd around 7 past few times and the runoff has still been ~5.9, indicating acidic soil(nute lockout)?At this point, you think it's best I just flush with plain tap water(ph ~7.7)?Week 6
Leaves. Color - Dark-brown
6 years ago
2
2
Solved
StonedWolf
Hello fellow experienced growers, is what I see on this leaf, combined with a reddening of leaf and main stems really signs of a CalMag deficency?
Or do I have another problem?
And is 1 ml CalMag Agent enough to counter it?
Dont wanna risk anything so close to the goal...Week 9
Leaves. Color - Dark-brown
6 years ago
3
2
Solved
Freedonia
Day 14. Since day 12 a brown spot has appeared on one of the leaves of the first node, spreading little by little. Because of the symptoms, I think it's septoria, so I've sprayed neem oil to see how it works for her. Someone knows what can it be?Week 2
Leaves. Color - Dark-brown
6 years ago
5
4
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
6 years ago
6
4
Solved
Smokingthatdank420
Can someone help me and tell me what I need to do to get rid of the little brown spots in my leaves? Thanks.Week 6
Leaves. Color - Dark-brown
6 years ago
2
2
Solved
Zz066
Does she has phosphorus deficiency or this is another problem?Week 11
Leaves. Color - Dark-brown
6 years ago
5
3
Solved
Bruce_Leroy1
Has anyone had one single branch effected by some sort of deficiency? I have it pictured in the photos for week 10. Any idea what would cause this?Week 10
Leaves. Color - Dark-brown
6 years ago
3
3
Solved
NodularStomp
Can some one tell me what this is ?
Lately there is some discoloration in some leaves of the plant.
It started at the leaf tips.
Pics are above.Week 8
Leaves. Color - Dark-brown
6 years ago
3
2
Solved
mrhat2001
Guys been going great until I checked today. My top leaves turning grey white and crunchy on 2 plants. 3rd plant ok. What do you think too much Kool Bloom? To much heat from the light?? I don’t think it’s the latter I decided to flush for 2 days to clean it out??Week 11
Leaves. Curl up
6 years ago
2
1
Solved
Dandamans
I believe I light burned my plants when I put in my second 300W LED. Plant's yellowing on tops and drooping and canoeing. Have just switched to 12/12 light 4 days ago. And started to feed Flowering mix of 9ml pure blend pro and 1.5ml cal-mag per 4L. Feed every water.Week 10
Leaves. Color - Dark-brown
6 years ago
2
1
Solved
Growdaddy420
When growing different strains in a RDWC system how do you balance plants with different nutrient needs. My amnesia auto ran into a major cal-mag issue and now is experiencing nitrogen toxicity, while my feminized Jack Herer's are largely unaffected. Thanks for the advice.Week 7
Leaves. Color - Dark-brown
6 years ago
3
3
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
6 years ago
4
6
Solved
Ktims420
I water my plants everyday , however I have mixed my nutrients “ph perfect grow, micro, and bloom” in with my water only the appropriate amount given on the bottle. Should I be using water with the nutrients everytime I water or switch it up with plain water as well?Week 2
Leaves. Color - Dark-brown
6 years ago
2
1
Solved
MisterSix
Today the leave got curl i don't know what the symtom is and if you can pls give me the way to fix it ( run off ppm is 1600, water with nutes with 600+ ppm). I was washing my coco coir before transplant it. Thanks for your help, should i flush it next time with only PH water ?Week 6
Leaves. Curl up
6 years ago
1
1
Solved
Ace860524
Well I'm in early flower at this point leaves still abit yellow should I up my feeding at this point as I'm at 739 ppms and when should I start my bloom nutesWeek 5
Leaves. Color - Dark-brown
6 years ago
1
1
