The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Login
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Leaves curling
Salvaturbe
started grow question 5y ago
i have a problem with the leaves of these plants, some seem to curl on the edges
Open
Week 5
Leaves. Curl up
likes
Answer
ChitownCannaChica
answered grow question 5y ago
Light/heat stress most likely! I had a plant taco before because it was too close to the light. ✌️🏻💚🌿
likes
Complain
Cockneycultivar
answered grow question 5y ago
I had this issue about week 4/5. I figured for me it was heat stress. What’s the humidity and it could also possibly light distance.
likes
Complain
Similar Grow Questions
Solved
TheGourmetWeed
Heat, RH or overwatering? Or alltogether?
Hey my fellow growers! The grow reached 32Celsius the last 2 days in the last hour before going into night time. On that time RH goes down to 32% and this seems like it's stressing this lady a bit. Yesterday fed her nuts - maybe a bit too much? Thank you for stopping by!
Week 3
Leaves. Curl up
Setup. Lighting
Feeding. Deficiences
5y ago
2
2
Solved
dekaz
Wondering what I should do for my leaves turning upwards on the green crack? also the heavy hitter middle is a bit yellowish, is that a worry? heat/ph/watering are things i feel pretty noobish at.how much water and how often?is 2l enough to fill it? & refill when the top is dry?
Week 2
Leaves. Curl up
7y ago
3
Solved
TegridyF
Yellow and fragile leaves 2 week
Couple leaves yellowing and bit curved up. I suggest there can be the options: 1) magnesium deficiency; 2) nitrogen deficiency; 3) Light burn. For case it is magnesium deficiency I sprayed the leaves with magnesium sulfate (solution - 1g per 1 liter), but it won't help.
Leaves. Edges burnt
Leaves. Curl up
Leaves. Color - Yellow
3y ago
1
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
Wilmer
Wavy leaves
Hey guys, some leafs are like wavy on the borders, could it be for high temp or too much light? (picture is not mine, mine are not that wavy , got this picture for a better example)
Week 1
Leaves. Curl up
6y ago
4
3
Solved
Leonard_Lunte
Leaves turning yellow from the bottom up
My older plants leaves are turning yellow from the bottom up. Its probably a nitrogen deficiency I think, I read that its common for plants in late flower but this one just shot its first pistils. What would be the smartest thing to do to combat this? Thx Its only on 4 leaves rn
Week 4
Leaves. Curl up
Leaves. Color - Yellow
Feeding. Deficiences
6y ago
4
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
Soter
Too much Light or heat? What seems to be the problem?
Too much light/heat? The Amnesia Haze kind of looking a bit sad with the hanging Leafs and curled edges. It is the only lady of 11 that look like this.temp can be up to 30 deg c.
Leaves. Curl up
Leaves. Dropping off
5y ago
1
1
Solved
willisknows
Heat stress?
Does this look like heat stress? It’s been in the 90’s all week.
Leaves. Curl up
4y ago
2
2
Solved
Galarihno
New Leaves Twisting
Why are new leaves "twisting" like this? This started in early flowering stage. I have 3 other plants, but only this one have this issue. 19°C - 23°C 55% - 65% RH 6.3 PH 150W - 45 cm height
Leaves. Curl up
Leaves. Curl down
Leaves. Twisted
2y ago
1
1
Solved
Frm11001
Necesito experto! Double cookies auto BSF
Tuve exceso de N al comienzo de floración, le hice lavado de raíces y continue aplicando fertilizantes de manera regular, hoy esta así. Mucho olor a verde pero no de floración, hojas con necrosis, estoy en etapa final de floración y sigue vegetando con hojas en buen estado!
Leaves. Curl up
Leaves. Color - Yellow
Plant. Stem - Red or purple
5y ago
1
Solved
Hotcerdi123
Is this a nutrient burn?
What do you guys think. Is my nutrient level too high? Currently in week 3 of flower with my 25liter pots and am ec of 1.5-1.6. Lower leaves look a little burned. Had some issues in the beginning with spider mites.
Week 7
Leaves. Edges burnt
Leaves. Tips - Burnt
Leaves. Curl up
5y ago
1
Solved
hellomynameis
What's wrong here?
Some leaves turn from green to light green to yelleow almost white. Begining from the edges to the core. Veins turn light green too. Rusty spots appear and leave edges and tip curl upwards. In the last state leaves get brittle and drop. Thanks in Advance.
Week 6
Leaves. Curl up
Leaves. Color - Yellow
Leaves. Color - Pale
4y ago
1
5
Solved
Seed_Leaf
Curling seedling leaves? What could be the problem? Some are fine, some looks like in the picture.
Hello everyone. Happy New Year! I got a few seedlings, and some are ok, some started to curl. What could be the reason? Water PH 6.0 Temperature D-25, N-23 Thank You! :)
Leaves. Curl up
Leaves. Curl down
10mo ago
5
3
Solved
BiteAway
Health problems?
What could this be? PPM: 700 - 800 Temp: 26C (79F) Hum: 50-60%
Week 10
Leaves. Curl up
Leaves. Color - Yellow
3y ago
7
6
Solved
Bigbuds420
Curly leaves, help!
Upwards curling of the leaves, any ideas? Also not sure if theyre all abit leggy or if they are on track
Week 2
Leaves. Curl up
Leaves. Color - Yellow
Plant. Too tall
6y ago
1
Solved
growpro44
Wrinkly and twisting leaves with ?cal? Def?
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
Leaves. Curl up
2y ago
3
3
Solved
Bushbanker4
Leaf problem
My leaves are looking strange? Can this be because the leaf hasn't fully unravelled/grown fully yet, or could thus be heat/nutrition. Added 2x pictures to see clearer 😁
Week 3
Leaves. Curl up
5y ago
2
2
Solved
Fayah_Burn
Leaves curling upwards
What could this be? I consider too intense lighting, could that be possible. Just transplanted a few days ago into these 1,7l pot's. Since it is the first time i use the The Mars Hydro TS 1000 for flowering i think i might have given the plants too much light.
Leaves. Curl up
4y ago
2
3
Solved
Jocolope
This seed was started the same way as all the others. This is my prized Sour Diesel from Reserva Privada. Was quite looking towards this one but she is giving me a hard time. Why is the leaves this way and whys is so small compared to the other ones?
Week 1
Leaves. Curl up
7y ago
4
8