The Grow Awards 2026 🏆 
Brown patches
Chilipadistarted grow question 4y ago
Brown patches starting to appear on older fan leaves only. Calmag?
Solved
Leaves. Color - Dark-brown
likes
SlowpokeFuegobudanswered grow question 4y ago
Hi! You probably want to check on the pH of your drain at first.. :) If it's too low, there could be lots of deficiency signs but caused by low pH. All the best!!
jeri10831answered grow question 4y ago
When mine did that, it was cal-mag, but mine were hydroponic
1 like
Complain
Mikewithgreenthumbs420answered grow question 4y ago
Check this site out growweedeasy.com go under plant problems this should help you out
1 like
Complain
Similar Grow Questions
Solved
Goenndalf
More rusty spotsSee this now on more and more leaves. Only upper fan leaves that get good light exposure seem to be affected from this and also the clawing.
Have backed off the nutes completely for now and will add ground egg shells to the water in the hope its a Ca deficiency.5y ago
1
1
Solved
CoughingKitty
Dark brown edgesHi. I need some solid advice as to what could be causing my lower leaves to be turning dark brown on the tips and edges. When looking closely, the browning has a bumpy texture and what looks like a fine, grey powder. Excess, deficiency? IdkWeek 8
Leaves. Color - Dark-brown
2y ago
2
4
Solved
RoidBlaze
Droopy, curling inwards, dark green/Brown leavesSeeing if i can get some more suggestion for droopy leaves curling inwards.
The leaves now have a very dark green to brown color on the leaf.
It's been about 4 days now. Def not under watering and don't think over watering.Leaves. Color - Dark-brown
3y ago
1
1
Solved
BrannabisTHC
Deficiency?Hey everyone. Does anyone maybe know what's causing this discoloration?Leaves. Color - Dark-brown
4y ago
1
Solved
heythere12345
Situation is getting worse with my blackberry auto day 35Situation is getting worse. More dark brown spots appeared since my last watering with half the amount of nutriens. Whats the next step?i thought about feeding only with water until leaves are green an healthy again, but how do i know its nutrien problem causing this?Leaves. Color - Dark-brown
4y ago
2
2
Solved
Eddjack
Cosa fare?Perche alcune foglie hanno questo aspetto? Hanno 16 giorni di fioritura .qualcuno sa dirmi cosa succede ?Leaves. Color - Dark-brown
Leaves. Other
5y ago
4
4
Solved
Milly808
Leafs getting brown color..what happened?Need help for this issueLeaves. Color - Dark-brown
6y ago
3
2
Solved
AkagamiWP
What am i doing wrong? and what shall i do?form a month i keep having a problem with my plants. the leaves are getting brown spots then they get all brown and start to crumble. i flushed the plants 2 times and no improovment. the watering ph is 6.45. i'm using advanced nutrients that i always used. temperature is 25 degreLeaves. Edges burnt
Leaves. Color - Yellow
Leaves. Color - Dark-brown
3y ago
2
4
Solved
rimzytfa
Bottom leaves issueCan someone tell me what is causing this issue and how should I fix it ?
Should I just remove the “infected” leaves?Leaves. Color - Dark-brown
Leaves. Other
3y ago
1
2
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
7y ago
6
4
Solved
GreenLiving
Browning leaves sections of leaf surface discolouredDay 18 leaf worries, browning areas, slightly metallic shine. I think from reading it might possibly be a phosphorus deficiency but I’m not certain so though I’d ask for advice.
Thank you for your time and all answers are appreciated. Have a great day!Week 2
Leaves. Color - Dark-brown
4y ago
2
2
Solved
Smoking_Joe_Frazier
Discoloration underneath the leaves. Should I be concerned?Leaves. Color - Dark-brown
1y ago
2
2
Solved
lovely_neighbours
Crispy brown leavesnorthern light is showing yellow and brown leaves at the top and the bottom of the plant. These leaves are thin and crispy like if they are about to fall off. I am watering it 2 to 3 times per week and started adding a bit of cal mag last week when they started showing brown dotsWeek 6
Leaves. Color - Dark-brown
4y ago
8
6
Solved
Mushyman420
Brown spots on older fan leavesSpotted some brown spots on 2 of the older fan leaves today. Any thoughts on what the issue may be?
Does not rub off- was worried about rust at first.
Some more info that could be helpful is that I am using RO water. Thinking about rasing the lights a little higher up too.Week 3
Leaves. Color - Dark-brown
3y ago
5
11
Solved
Therapy420
Leaf discolorationWhat is happening to my leafs? Are they fading or is it nute problem?Week 10
Leaves. Color - Dark-brown
5y ago
1
1
Solved
Growernotshower1
Deficiency?Anyone seen leaf damage like this before? 6 weeks into veg in FFOF. A few fungus gnats but no real infestation. Not adding any nutes yet. Really concerned as the plant is looking less green and more yellowy than it did last week.Week 5
Leaves. Color - Dark-brown
4y ago
2
1