The Grow Awards 2026 🏆 
Possible Heat stress?
hooolianstarted grow question 4y ago
Have 8 of these WWX BB plants (check my diary) in one tent - three of the tents are all looking good and flowering well - this tent however is showing signs of heat stress - it is week 4 of flower - heat is around 29c during the day and humidity 50% - leaves look curled - cure?
Solved
Leaves. Curl up
likes
Cultivateanswered grow question 4y ago
29 Degrees Celsius? If so that’s high! Your daytime temp wants to be around 24-25 if you can. I’d say 27 Max, Also what lights are you running? The light intensity maybe causing the problem too
Similar Grow Questions
Solved
Laxzeus32
Leaves curling into budAs 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
BobbyBou
Leaves dying off during flower, problem?6th grow, first time experiencing this. My Godfather OG has some leaves dying off during flower. Week 7 of flower just started and the symptoms started showing about a week ago. Temp low:high (night:day) at 62f and 75f. Humidity 56-58. Nutes EC 1800. Ph 5.8-6.1. trouble? Action?Leaves. Curl up
1y ago
1
5
Solved
Rams3s
What happen?Can somone tell me what happen to my love??
much/less light? Carence ? Excess?
Im at the end of the strench (3th week of bloom)Leaves. Edges burnt
Leaves. Curl up
Leaves. Color - Dark-brown
3y ago
1
5
Solved
Beginner86
leaves curls upthere was yesterday good but this morning there looks so.
i have no idea, i have the lamp a bit higher and yesterday they have give her every thursday Fertiliser like last week.
maybe anyone can me help with my question..
thanksLeaves. Curl up
Leaves. Curl down
Plant. Stem - Red or purple
4y ago
1
3
Solved
moses21
Nute burn in late flowerI've encountered some late stage nute burn and have brown and twisted tips on fan leaves as well as some bronzing. I am reading different treatment options for nute burn online but what else should I try at this late stage? I flushed ph'd water w/calmag and it's slowing a bit.5y ago
1
1
Solved
ykscotttyk25
My plant is sick like never before,should I end her life or wait for a mericalMy plant is sick like never before,should I end her life or wait for aLeaves. Tips - Die
Leaves. Curl up
Leaves. Color - Yellow
2y ago
4
4
Solved
dubkream
I'm having an issue with two of my plants, the leaves are curling upward right at the base of the leaf. My humidity is right at 57-60%, heat goes fro 76-81 during the day, watering once a day. Does anyone know what might be causing this? Im on day 10, by the way.Week 2
Leaves. Curl up
8y ago
7
5
Solved
Herbalist7
Switched to flower,12/12, new growth curling/cuppingHey having some problems 2nd day agyer switching to flower and my new growth is curling/cupping upwards.. Can it be my HPS is too close, or is it my nutes need to be more flower based...trying to catch it before it too late. Can i send a pic?Leaves. Curl up
Setup. Strains - Photoperiod
Feeding. Other
6y ago
2
3
Solved
Bochica
Leaves Curling upHello growers, this is my northern lights auto, seedstockers, into 3rd week, not sure why leaves are curling up... They are on 18/6 .. 50cm light distance.. TS 1000 at 37%... To add i have not set up a fan yet. So I keep the tent open at night and open regularly during day... TxLeaves. Curl up
3y ago
6
5
Solved
EmberWeed
Leaves curling up and down and yellow leavesWhat could be causing this?Leaves. Curl up
Leaves. Curl down
Leaves. Color - Yellow
3y ago
1
6
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
larryargus
Leaves rippled ? What causes this?These are pics of day 13 seedlings. The larger leaves show signs of something but I don't know what. They are Blue Dream Autos in a 50/50 mix of Happy Frog and Ocean Forest. Temps have been 74 degrees F with 50% humidity the whole time. May be nothing but this is my first.Leaves. Curl up
3y ago
2
1
Solved
Mopish
What to do with crispy curly fan leaves that do have some resin on them?, I'm already on flushing.Some fan leaves are starting to look a bit too crispy and curly, they do have some trichomes, I'm 3-4 days into flushing.
I'm not sure if the dry matter can "contaminate" the buds somehow, and don't know if I should do something about it, I'm planning to get some "bubble hash"4y ago
2
1
Solved
MasterOfNone
Does anyone know what this is? Just before this happened the leafs were cupping upward. She’s in coco coir and perlite. I feed her biobizz grow 3ml/l and biobizz heaven 4ml/l and cal mag 1ml/l and ph the water to 6.3 about 6-7 weeks into veg and this is the first problem I’ve hadLeaves. Tips - Burnt
Leaves. Curl up
Leaves. Color - Yellow
5y ago
1
4
Solved
hooolian
Kolas folding upwards?Some of the tops of some colas are stretching up and not flat to allow the pistils to form correctly. almost looks as though they are stressed - I have had similar things happen with other tents and had to remove the plants in the end. How can I stop this?Week 4
Leaves. Curl up
3y ago
2
2
Solved
Mikewithgreenthumbs420
What’s going on have 3 weeks left but this clone matures really quick almost no more white hairsHave 3 weeks left or so till harvest but the bottom leaves keep dying more every other day any taughts about harvesting soon Here are some pictures of what’s happening to this or is this normal since it’s almost doneLeaves. Curl up
Leaves. Dropping off
Other. General questions
5y ago
2