Check the winners The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Have brown spots on leaves and get it to stop!
BeeZBudZ
started grow question 5y ago
I can not figure out what this is I have tried treating for calcium deficiency however I can’t seem to shake it.
Solved
Leaves. Color - Dark-brown
likes
KushGANG
answered grow question 5y ago
Hello it seems you have calmag deficience. How do you try to correct it. You can use epsom salt which is the best for this. You can mix it in water and mist your plant for a quicker effect. Good luck. Bye
likes
Complain
Selected By The Grower
Chow_13
answered grow question 5y ago
could be excess P and K. they can lockout calcium. hard to tell without any details
likes
Complain
Similar Grow Questions
Solved
Zuzuman
Mehrere Mängel
2. Grow mit Gorilla Cookie Autoflower Samen. Hinten links sehen die Mängel aus wie hinten rechts, denke Phosphor also laut Bildern und vorne ist so ziemlich vieles gemischt aber extrem. Der einzige Bud der richt wenn man ihn anfasst ist der von der hinten rechts die anderen nicht
Buds. Not fattening
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
10mo ago
2
Solved
elevensixty6
Spotting issue consistent in all my grows. Have always thought Cal deficient but more Cal never fixes the issue. PH always checked with 2 PH pens 6.2-6.8.
Always pops up around the same time in flower.. week 4/5. Brown irregular spots and occasional curling down on the fan leaves. The only things I have consistently used in all the grows is the LED light, RO water, and CALiMAGic. Switched to dry organics but now its back. N toxic?
Week 8
Leaves. Curl down
Leaves. Color - Dark-brown
Leaves. Other
4y ago
7
6
Solved
YellahJelle
rusty spots
what are these rusty spots? it is getting worse then a few days ago. week 4 of flowering
Week 10
Leaves. Color - Dark-brown
6y ago
1
1
Solved
HomeGrown_Medicinal
Brown, curling leaves?
I have no idea what's happening here but the girls are showing some kind of deficiency. Browning, curling leaves. I have two 100w led lights above them and I use an organic dry fertilizer, I recently brewed a compost tea to try to get nutrients to them
Leaves. Curl down
Leaves. Color - Dark-brown
4y ago
6
6
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
3y ago
6
6
Solved
TheProfessorGrows
K deficiency? Or something else?
Not sure how to go about this deficiency. PH is solid at 6.5 so it’s not a ph issue. It seemed I had corrected the deficiency when it first appeared a few weeks ago, but now the brown spots seem to be spreading again. I think it might be K but not sure? Any ideas?
Week 9
Leaves. Color - Dark-brown
3y ago
1
3
Solved
ZipCap
Which deseas did my plant have?
One of the plants shows an illness. What can it be? I had previously sprayed the plants with water.
Leaves. Color - Dark-brown
6y ago
1
Solved
awymist
Brown endings on the leaves
Is it okay that my plant has these brown endings on the few leaves?
Leaves. Color - Dark-brown
4y ago
1
1
Solved
Zz066
Does she has phosphorus deficiency or this is another problem?
Week 11
Leaves. Color - Dark-brown
7y ago
5
3
Solved
Edenganj
Brown spotting
Can someone tell me why some of my leaves are spotted brown? What would cause this? Thank you so much
Leaves. Color - Dark-brown
5y ago
5
4
Solved
Jan_Jan
Flecken auf Blatt und Halm oder Helikopter-Mutter
Die 2 Flecken auf dem vorderen Blatt und die dunklen Stellen am Halm beschäftigen mich ein bisschen. Glaubt ihr, die Pflanze hat ein Problem oder mache ich mir mal wieder zu viele Sorgen? VP 10. Steht im 11l BB AllMix und wurde einmal am Anfang der VP mit 3l gewässert.
Week 2
Leaves. Color - Dark-brown
Setup. Strain - Autoflowering
Setup. Outdoor
2y ago
4
4
Solved
Dday314
Calcium deficiency?
Hello Everyone. The Fan leaves at the top and Middle have brown spots, I use RO water and feed with Fox Farm Tiger Bloom..Everytime I feed or Water I have been adding 5 ml of Cal Mag Ph 6.4 feeds right at 900ppm . NL auto week 4 flower. Thanks in advance. Wash your hands 👍
Leaves. Color - Yellow
Leaves. Color - Dark-brown
6y ago
1
1
Solved
BrandoBuds
Yellow/ brown leaves #2 (pics didn’t post the 1st time)
Hey guys so my plants are starting to turn this yellowish color and I’m not sure what the problem could be. Sorry for the second pic, it’s kinda blurry but that’s the actual color compared to the other leaves. It’s my first grow and I’m kinda lost on a solution . Many thanks
Leaves. Color - Yellow
Leaves. Color - Dark-brown
6y ago
1
1
Solved
PinkParrot
Brown leaves
[ Lemon Orange 70% sativa ] Lot of brown leaves, starting from the tip [ Persian pie 60% Indica ] less affected by the problem (same watering) { We tried } PH 5,7 | & high PH 6,2 EC 0.9 | EC 1.2 Upper light Cooler temp Higher Fans speed Note : Grow & Bloom bottles crystalized..
Week 9
Leaves. Tips - Burnt
Leaves. Tips - Die
Leaves. Color - Dark-brown
4y ago
6
6
Solved
fragmentsoftime
Hi, last weeks my plants started to show symptoms of nitrogen deficiency. last 2 times i watered with 1,5x nutrient. Now they look like that, do you have any advice about the plants? -water 6.5 ph -120x120 tent, 240w QB Nutrients: t.a pro organics grow-bloom, aleo vera spray
Leaves. Color - Dark-brown
Feeding. Deficiences
2y ago
1
Solved
Tiagorchaves
Brown spots on leaves
This brown spot showed up in some leaves. I've cut them. But some more showed up next day. Is this any micro nuts def or a fungus?
Week 4
Leaves. Color - Dark-brown
5y ago
2
4
Solved
heythere12345
Weird leave color sad looking leaves
What does that colour on the leaves mean? Also does it look like overwatered? I watered today 1L after 3 days of not watering and pot was light
Leaves. Color - Dark-brown
Plant. Wilting
4y ago
1
1
Solved
growbie
Brown dots on leaves
Leaves I really dont know whats going on... Something is wrong. It looks like leafs are burned by over feeding, but i only used mycorhiza. Does anyone know what happend? Or any advice how i can fix it?
Leaves. Color - Dark-brown
6y ago
2
1
Solved
BadGrower
Lack of light or Cal-mag?
Some spotty leaves here at the base of the plant. The overall plant heath is fantastic and dense, haven’t done much defoliation so the bottom gets very little light. Is this a no light issue or calmag? I’m leaning towards calmag but the lower canopy gets very little. Advise?
Leaves. Color - Dark-brown
5y ago
1
3
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
4y ago
5
4