By continuing to use the website or clicking Accept you consent to our cookies and personal data policy. For details please see Privacy Policy
Accept
Heat or light stress??
YWLganjisanswered grow question 4 years ago
I had the exact same problem where your leaves start curling inwards and I found out from my research that it was either 2 factors heat or light the heat, during summertime it can be hard for you to keep the temperature down so I would recommend buying a aircon unit,
temperatures between 20–30°C (70–85°F) during the day. Growers tend to agree that the ideal temperature is around 25°C
1 like
Complain
The8thChevronanswered grow question 4 years ago
Yes. Either or both. Solution is the same, move your light up a bit.
1 like
Complain
Similar Grow Questions
Solved
mrhat2001
Guys been going great until I checked today. My top leaves turning grey white and crunchy on 2 plants. 3rd plant ok. What do you think too much Kool Bloom? To much heat from the light?? I don’t think it’s the latter I decided to flush for 2 days to clean it out??Week 11
Leaves. Curl up
6 years ago
2
1
Solved
Majormolasses
If I’m correct but who knows that most likely over watering or my lights are to close?Week 2
Leaves. Curl up
5 years ago
11
8
Solved
ggBrox
Any ideas on my lower leaves cupping? I'm thinking a root issue from overwatering. I last watered 6/11 and this started showing on 6/13 and has progressed. Soil is still moist and fungus gnats popped out of nowhere this week as well. Have SNS 203 for next wateringWeek 3
Leaves. Curl up
5 years ago
1
1
Solved
Paulolo03
The leaves are curled up, it's hot in the room these days, I guess this is the reason. Plants growing fast anyway, humidity between 48%57% but I'm worried because of this leaves problem. Should I ? I do my best to cool down but can I do something else ? Mist the leaves ? Thanks !Week 2
Leaves. Curl up
5 years ago
2
2
Solved
tripa_grower
Hi guys, I’ve noticed the leaves of 2 plants are curl upwards. I think overwatered, Day 9 I’ve watered two times (wrong) and after checking Day 8 too. At day 10 I've didnt watered, and today I've seen the soil dry, so I putted 100ml water. What do you think is causing this curl?Week 2
Leaves. Curl up
5 years ago
4
3
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
6 years ago
1
1
Solved
MG2009
Please look at pic of leaf tips curling, on older large fan leaves, any ideas on what is going on?Thanks for your guidanceWeek 6
Leaves. Curl up
5 years ago
3
2
Solved
Mr_fluffy
Hello is it nut burn or to little nuts? The biggest plants are the ones affected. The big plants also have less dense buds and more white hairs but looks like they have the potential of more dense buds. The EC rises a from 0.8 too 0.9. They drink a lot of water. Have auto topoffWeek 19
Leaves. Curl up
6 years ago
3
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
6 years ago
3
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. ThanksWeek 3
Leaves. Curl up
6 years ago
1
Solved
Dankdreamer
Looking to find out how long you need to reveg a clone Taken 2 weeks into flower. I believe it's called Monster cropping in was just curious if you had to wait for the new growth to be completely normal or could you flower it once it hits say three leaves. any info welcome thanksWeek 9
Leaves. Curl up
6 years ago
2
Solved
BluheBlah
Hello i am a first time grower and there is something goin on with my plant and i dont know what to do.Thanks for your help.Week 3
Leaves. Curl up
6 years ago
3
2
Solved
Mr_fluffy
plants effected by leaves thats brown and crispy. Two of the plants had this in the start but almost no crispy leaves now,the most sative looking is still affected. There is very low humidety in room. 30%. EC is 1.5. Is it low humidety or nuts. See pics😀👍🏼Week 6
Leaves. Curl up
7 years ago
3
2
Solved
Bluesbreeder
ok take a look at the plants! number one has curled up leaves and the leaves look smaller then the other plants.
and the nerves are a little pale color on all the plants. any advice?
is it Cal mag ? Nitrogen? heat stress , water stress ,wind stressWeek 8
Leaves. Curl up
7 years ago
5
4