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
Curling dark leaves
Bretwalda
started grow question 5y ago
Advice for what i think is nitrogen deficiency, have flushed with ph 6.3-6.4 water about 900ml
Solved
Leaves. Curl up
1 like
Hazemaster420
answered grow question 5y ago
She’s fine, let her dry out a bit! Also add some Magnesium sulphate to straighten her out! Cal mag her up! Mainly Magnesium though!
1 like
Complain
Selected By The Grower
GrowersParadise
answered grow question 5y ago
to me looks like plenty of Nitrogen, possibly over watering? how often are you watering?
1 like
Complain
Bretwalda
answered grow question 5y ago
@hazemaster420
, is cal mag and magnesium sulphate same thing or give both?
likes
Complain
Roberts
answered grow question 5y ago
Nitrogen toxicity is issue
2 likes
Complain
Hazemaster420
answered grow question 5y ago
Theirs plenty of nitrogen though, see how the leaves are slightly turning? This is a sign of too much Nitrates/nitrogen!
1 like
Complain
Similar Grow Questions
Solved
biuxiuer
我的女孩怎麼了,這個是生病了嗎?還是太多的餵食?
在他長出第二對葉子的時候這樣的現象就出現了,但是只有一邊有葉子,我查了相關資料顯示這是菸草鑲嵌病毒(Tobacco mosaic virus;TMV) 我覺得挺像的。但是不是很確定,我該繼續等幾天嗎?還是把葉子切掉。 誰可以告訴我解決方法,希望他可以度過生長期,因為他是自動開花,每一天都很重要。
Leaves. Curl up
Leaves. Veins - yellow between
Feeding. Chemical composition
5y ago
3
3
Solved
GetLit420
What’s Happening Here With My Leaves?
Not sure what’s going on here. It’s happening to 3 of my plants and I’m not sure whether its good or bad. I haven’t watered in 3 days so I don’t think it’s overwatering because it just happened today.
Week 2
Leaves. Curl up
6y ago
2
Solved
Scratchie
Nitrogen lockout?
I've yellowing bottom leaves and yellow top all over, is it nitrogen deficiency and nute burn?
Week 5
Leaves. Tips - Burnt
Leaves. Curl up
Leaves. Color - Yellow
4y ago
1
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
7y ago
1
1
Solved
dalilama
My leaves head upwards, is it a bad sign? [Autoflowering]
First time I get this far, I sometimes noticed after I water the leaves start to head upwards, or even without reason during the day.... then go down again. What is the reason for this you think? Is my light too far? or not enough something? I only watered twice in 10 days.
Week 2
Leaves. Curl up
6y ago
2
2
Solved
Dan1000
Leaves curling inwards and upwards
seed number 1 has started curling its leaves slightly inwards on itself, I am wondering should I be concerned? and also any help regarding seed number 2. it is growing but at a very very slow pace and abnormal shape. any ideas? or just let it be.
Week 3
Leaves. Curl up
Plant. Too short
6y ago
5
4
Solved
LumberjackBuds
So a bunch of my babies are getting this extreme leaf curling. It happened when the lights were off for only like 3 hours. Could it be windburn or Humidity? Nothing is out of whack in the Grow room temps were under 80 and humidity was >70 because I have a dehumidifier. Thanks
Week 3
Leaves. Curl up
8y ago
1
Solved
Portnugs
Leaf curling
Hey guys, so my gorilla Glue autos started curling a while back I thaught it was due to high temperatures but this week things are cool and curling continues. Anyone know what may be the cause of this issue? Anything to worry about?
Leaves. Curl up
5y ago
1
3
Solved
Tontsekz
Started LST but now plants look a bit sick?
I attempted to do LST but I think I've maybe started too early as some of the leafs started to wilt kinda bad afterwards. Was careful not to break anything. Edges are curling and have discolored. I have a feeling they're a bit short too? Photo from 5 days ago and today.
Week 2
Leaves. Curl up
Leaves. Color - Mottling
Plant. Too short
6y ago
3
2
Solved
safooo
if some one could please advice about is that curling or will just be fine
Week 2
Leaves. Curl up
2y ago
8
5
Solved
XxBILLZAxX
Plant leaves closing upwards?
Hi Growers, Topped the plants for the final time & the top leaves have decided to curl and point upwards. Almost looking like they are trying to close lol.. Anything I've done wrong?
Leaves. Curl up
6y ago
2
2
Solved
Newfie80
Leaves curling up
So I have flushed my remaining widows with 20 gallons of ph water 6.5 to take ppm down to 250 ppm runoff, they have two weeks left till harvest, the fan leaves have started to fold into themselves, I don’t know what is happening, they are in smart pots too.
Week 10
Leaves. Curl up
6y ago
2
2
Solved
potfromgreece
Curl up leaves week 2
Help guys! It seems to me that the leaves look a little twisted. What is the problem? May be because it is too hot outside? And also have small white spot on one leaf.
Week 2
Leaves. Curl up
6y ago
3
2
Solved
ValleoGrow
Leaves curling upward, is this due to to High humidity or What? The humidity is 80% and i know its to much its cause its been raining alot lately and my tent is outside In a open shaq
Week 2
Leaves. Curl up
8y ago
1
Solved
Bootymissles
Week 6 flower HELP
Leaf tips curling but not discolored on my bubba kush. Had some pH issues last few weeks but finally corrected it. They weren't like that yesterday, it was 74 when I opened the tent today. What could it be? Is it a big deal?
Week 13
Leaves. Curl up
5y ago
5
2
Solved
Deewy44
leaf curl.
Hi guys and girls. Got 5 week old Dr grinspoon. Top set of leaves are curling up. Grown in coco 900w LED using Advanced nutrients A B + b52. Ph6. Any help would be grateful thanks.
Leaves. Curl up
6y ago
2
3
Solved
HighGrower89
Dunkle Flecken auf den Blättern.
Moin.. Bei einer meiner White Widow kommen seit Tagen dunkle Flecken auf den Blättern und seit heute sind auch die ersten Flecken auf einer Blue Dream.. Kann mir einer sagen was da ist und wie ich es weg bekomme? Betroffene Blätter entfernen hat nicht geholfen.
Leaves. Curl up
Leaves. Color - Black or grey
5y ago
1
2
Solved
EddieEd
Need help with diagnosis
What sort of disease/deficiency/problems am I facing here?
Leaves. Edges burnt
Leaves. Curl up
Leaves. Color - Dark-brown
4y ago
3
Solved
Granddaddy_Terp
What's causing my brown crispy leaves!?
Over the past week my plants have taken a turn for the worse. Many leaves went from yellowing to browning to completely crispy! Other leaves have brown spots on them and some of the stems are purple.
Week 8
Leaves. Curl up
Leaves. Color - Yellow
Leaves. Color - Dark-brown
5y ago
2
8
Solved
La_Tsib
it is obvious where is the problem here.. the lips of the leaves curled upwards, The color also is deep green , very deep not as the others plants!! Any tips or advices what is the problem here? https://growdiaries.com/diaries/11755-white-diesel-auto-first-grow
Week 3
Leaves. Curl up
8y ago
2
2