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
What is this?
Tonno
started grow question 5y ago
Can someone explain to me what is this?
Solved
Leaves. Color - Dark-brown
1 like
Roberts
answered grow question 5y ago
Calcium deficiency
likes
Complain
Selected By The Grower
Similar Grow Questions
Solved
docpayce
Is this fungus infection or calcium deficiency?
Plant seems fine overall but shows brown spots on some leaves (new and old). Week 4 bloom in soil. 3l rain water pH adapted + CalMag to 250 µS/cm. Crazy Hills fert. twice a week (EC 1600 µS/cm). Water pH 5.0, drain pH 7.4, drain EC 1400 ... 1500 µS/cm.
Leaves. Color - Dark-brown
2y ago
1
1
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
7y ago
2
2
Solved
ADM233KA
Deficiencia o exceso en mi zkittez
Tengo un problema con mi zkittlez alguna hojas de las puntas se están poniendo así especialmente de la hojas inferiores, no se que exceso o deficiencia es.
Week 10
Leaves. Color - Dark-brown
6y ago
4
4
Solved
curious_jules
Brown leaves - what am I doing wrong, folks?
They look yellow in the photo, under 250W of blue light, but they are brown. This starts at the tips of the large lower leaves and spreads quickly to the whole leaf. Also modest edge curl. What am I doing wrong here, folks?
Leaves. Curl up
Leaves. Color - Dark-brown
Leaves. Color - Mottling
5y ago
3
3
Solved
sinasafari
Top growth issues
Transplanted outside more than a week ago and it was doing really good until this happened Any help would be appreciated.
Leaves. Color - Dark-brown
2y ago
3
2
Solved
Flamingo21
Leaves dying...
(Not from my diary, asking for a friend, thank you) Hi guys, need some help please. What can cause this problem on the leaves? I'm using foxfarm soil (ocean forest) Ph range 6.5-6.7 Cal mag 4 ml /gallon
Week 6
Leaves. Color - Dark-brown
5y ago
2
2
Solved
Jake13255
Browning leaves? Did a soil slurry and dropped the water from 6.8 to 6.2. Does that mean it’s locking out? How should I go about fixing this? In peat pearlite and worm castings. Added about 6 cups of lime to the 20 gallons of soil thought that should have helped the ph?
Week 3
Leaves. Curl up
Leaves. Color - Yellow
Leaves. Color - Dark-brown
5y ago
1
Solved
Marinik
Why leaves brown? (urgent)
Some leaves turn brown as in the photo. Leaves in the middle turn brown first, then bottom leaves. Now I try making larger lamp-to-plant distance and feeding less nutrients, but no good sign appears. Other conditions are stated in my diary. Why do you think it is?
Week 7
Leaves. Color - Dark-brown
6y ago
2
Solved
Chronigmatic
Brown dots lower leaf
Hi im noticing some brown dots on a leaf somebody to check whats wrong?
Week 3
Leaves. Color - Dark-brown
Leaves. Other
6y ago
1
1
Solved
EvilGrower
Calcium deficiency?
I recently bought Calimagic for my calcium fix. Prior to this week I have been using tap water for calcium. Is 2mL/gallon of calimagic too little? Noticed some leaf damage I believe to be calcium deficiency. Does she need more calmag? Thanks for your help all!
Week 8
Leaves. Color - Dark-brown
6y ago
2
4
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
5y ago
2
1
Solved
Medi_K8
Browning of plant 1 lower leaves
Guidance please, On my 1st plant it looks like it has a pH issue however my other plants don't have any signs of a problem. I don't have a pH meter but have test strips and I have not seem an issue with my water. Is the browning on some of the lower fan leaves normal?
Week 8
Leaves. Color - Dark-brown
5y ago
2
2
Solved
Luxus15
question about a blue kush berry
hello, I would like to know if I can save my plant because the leaves are really in bad condition after the last time I was told an overdose of nitrogen but there are only the branches at the bottom that are not too touched. so i wanted to know what i should do, i rinsed it two d
Leaves. Edges burnt
Leaves. Color - Dark-brown
5y ago
2
4
Solved
BosHerbs
brown/bronze marks
Quick question, i notice some brown/bronze spots on all 3 plants. Is that a cal mag issue?
Week 3
Leaves. Color - Dark-brown
5y ago
2
3
Solved
Skyisthelimit
Brown spots leaves
what do you think , 4 weeks old , is in Plagron bath mix .. I gave her 1x 2ml alga grow and 0.1ml rootbastic . she is in a 11l pot .. am worried about the brown spots ??
Leaves. Color - Dark-brown
4y ago
1
1
Solved
yokotasan
Brown points and yellowing
Yo. I have 4 identical plants. One suddenly started to yellowing (mainly bottom) But top has some coloring of brown. Also, i feel like all 4 girls are slow in flowering. P. S. I have 5l pots. The rest like temp, humidity and ph is normal. I also use filtered water.
Leaves. Color - Dark-brown
3y ago
3
6
Solved
Royalgorillaxx
Whats wrong???
What's wrong???
Leaves. Curl up
Leaves. Color - Dark-brown
Plant. Other
6y ago
3
Solved
Wyregrasser
Hi everyone. I am rdwc w/4 plants near end of flower. This plant has always been unhealthy. However this is a new twist. As I said rdwc, other girl are groovy, so it is what it is but my question is; what is it? Genetics?
Week 16
Leaves. Color - Dark-brown
4y ago
8
5
Solved
KOKOK
Help my plant
Hey, i see something wrong with my plant, untill Day 10 she was under the cfl lamp n every thing was ok, at the Day 11 i switched the light to LEd and this happend:( İ noticed when i compare the photos of the day 11 with Day 10, please help me im nervous, Thanks. What you think?
Week 2
Leaves. Tips - Burnt
Leaves. Color - Dark-brown
Leaves. Color - Mottling
5y ago
3
3
Solved
MarkWatney
Droopy leaves?
Is my plant okay, i feel like it could be overwatering but i’m not sure, leaves are droopy, and first leaves it has starting to get little dark spots, not sure what’s happening
Leaves. Curl down
Leaves. Color - Dark-brown
5y ago
2
1