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
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Wrinkly and twisting leaves with ?cal? Def?
growpro44
started grow question 2y ago
Could this be too less air circulation and too hot temps? It seems i have it everytime i put them in flower and put on the big spiderfarmer 730 watt
Solved
Leaves. Curl up
likes
Inganjawetrust
answered grow question 2y ago
Looks like heat stress ,if your light has a dimmer try turning it down some. If no dimmer then raise the light if possible.
1 like
Complain
Selected By The Grower
Scrubbyjimbob
answered grow question 2y ago
I would say your instincts are leading you in the right direction.
1 like
Complain
Similar Grow Questions
Solved
BobrMarley
manage nutrient burn from soil mix
diy soil mix (see Week 0) got only pH'd tap water, compost tea and banana tea. started showing strong signs of nutrient burn recently and some spots on the oldest leaves I haven't seen before. so, how do I manage her to harvest? since I can't cut back on the nutes ...
Week 7
Leaves. Tips - Burnt
Leaves. Curl up
Leaves. Other
10mo ago
2
5
Solved
Thibaut
heat burn?
yo guys!! i think its heat burn because it was 35+ today and they are in a tent, but one of my beautiful girls looks like this?? is it heat burn?
Leaves. Curl up
6y ago
1
2
Solved
giggi
Curled leaves upwards
I noticed upper leaves are curled upwards. Is this a symptom of a problem of any kind? many thanks for your help
Week 3
Leaves. Curl up
5y ago
1
6
Solved
Budha420
Nute burn?
Should i flush my plant? My other plant had same issue w her lover leaves but this lady got it in second leaves too😢
Leaves. Tips - Die
Leaves. Curl up
Leaves. Color - Pale
4y ago
2
3
Solved
Concision
Help with burned leaf tips
The tips of some of the leaves have begun to dry, curl, and look to be dying (see pics). I think it's some sort of nutrient burn, but I'm unsure. I water every other day w/ a solution of Miracle-Gro 24-8-16 at 50% recommended concentration. Used distilled H2O last 2 waterings.
Week 6
Leaves. Tips - Burnt
Leaves. Curl up
5y ago
3
1
Solved
bobo66
hplvd again? or just the heat?
maybe i'm paranoid, but i'm getting tired of it. what do you say, do I have a virus or did they just have a problem with the heat?
Leaves. Curl up
3y ago
1
3
Solved
Kokotokes
Both plants in same pot but one is having problems yellow leaves burnt curling back turning white but other plant is just slight nutrient burn and leaves turning black on top or dark dark purple is it just the plant going thru flowering. Should I harvest it before it gets worse?
Week 12
Leaves. Curl up
6y ago
2
2
Solved
bubby
Leaves curling
Hello guys l, Last 2 days fan leaves are curling up. What is the problem? Humidity and tempriture are normal, except night tempriture(about 22-24 C) Watering once in 4-5 days.
Week 5
Leaves. Curl up
5y ago
3
3
Solved
Laxzeus32
Leaves curling into bud
As sugar leaves send their nutes to the buds and start to curl/die, do I need to trim them off before the curled part reaches the buds? The fan leaves were an easy choice to trim...sugar leaves I’d have to trim the leaf rather than stem. Is that ok or necessary?
Week 11
Leaves. Curl up
4y ago
1
Solved
SnowBuds
Tips yellowing
is this light burn/stress or Defiency? New growth seems to be lighter green than the rest. Ph is 6.0 Ppm is 580ish (slurry) Light was 11inches away from canopy of tallest plant and 12-13inches from other. Soil is not over watered. Temp is between 68- 72 degrees. Humidity %50
Week 6
Leaves. Tips - Burnt
Leaves. Curl up
Feeding. Deficiences
5y ago
1
2
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
mangojuus
Curled leaves
How come the left plant has curled leaves and the other doesnt? The other one is higher so i cant be the loght distance i reckon
Leaves. Curl up
6y ago
1
2
Solved
pendeja420
Everything seems to be OK except one thing (week 3). I thought using the greenhouses at night made this, but it doesn't. When I check the plants early in the morning, their leaves are slightly curled upwards, just along the edges. As the hours go by the leaves flatten. Any clue?
Week 3
Leaves. Curl up
6y ago
1
3
Solved
gogocrack
This is a 27-day auto plant. The problem is that the leaves are crunchy and curled upwards. Soil pH measurement 6.5. There was a fan right in front of it, I changed its direction 1 week ago. Do you think this is a disease?
Leaves. Curl up
Leaves. Twisted
5y ago
3
3
Solved
Afrom_mfk_M_A_N
Nitrogen toxicity
Could someone give me a suggestion? My "Cookies Kush" plant doesn't looking well and I know that it was about nitrogen toxicity. So I didn't fertilized them for a while. Only with watere but they still looking not so good. What should I try next. Thanks in advance.
Leaves. Tips - Burnt
Leaves. Curl up
Leaves. Twisted
4y ago
4
4
Solved
OrganicAutomatic
She's hungry?
One of the four cherry cola auto showing signs of deficiency the other doing amazing. Some of the leaves have claw up and yellow on the sides and some of the leaves are very healthy. She's is larger than her sisters perhaps just need to feed her more? How is she looking guys?
Week 7
Leaves. Curl up
3y ago
2
5
Solved
PanchitoGrow
Nute burn (Added nuts to supersoil)
So, I added unnecessary nutrients to my super soil and end up with nute burn, I Flushed until ppm was 1100 it was over 6000, and since i've been dealing with yellowing and curling leafs, brown spots and well it's all going down so quick. Any idea how to fix this. I'm lost.
Leaves. Edges burnt
Leaves. Curl up
Leaves. Color - Yellow
5y ago
3
3
Solved
DreamOn
Praying leaves
The leaves are stretching up (praying leaves as I understand). It's just 1 day after topping and I would expect some stress, is this a good or bad sign? I fear I might have topped them a bit too early.
Week 2
Leaves. Curl up
Techniques. Topping
5y ago
23
3
Solved
Growdrobe420
Is this a Deficiency?
Could anyone. Please tell me whats going on here is it a potassium deficiency or is the light too strong
Week 4
Leaves. Curl up
Leaves. Color - Yellow
5y ago
1
Solved
Ishkabud
Yellowing cause?
What could this yellow and brown spotting be on the uppermost leaves? Also the curling? They are autos, i am giving them half dose of bloom and phospherous nutrients, as well as half dose cal-mag, temperature isnt overly high, watering every 2-3days until runoff.. bit confused
Leaves. Curl up
Leaves. Color - Mottling
2y ago
1
1