The Grow Awards 2026 🏆

Back to Grow Questions

Muss ich mir Sorgen machen, wieso biegen sich die ...

Grow420picestarted grow question 4y ago

Muss ich mir Sorgen machen, wieso biegen sich die kanten der Blätter so nach oben, was könnte sie haben...?

Grow420pice

Solved

Leaves. Curl up

likes

MrStinkyanswered grow question 4y ago

That is generally a symptom of heat stress, try lowering the temps if you can.

1 like

Complain

Selected By The Grower

Similar Grow Questions

Solved

Canoeing leaves and burnt ends Canoeing and burnt tips of leaves. Temperature usually between 27 tp 29 degrees. Quite low humidity says 10% but not sure this is correct. Veg stage week 3 Any help greatly appreciated.

Leaves. Edges burnt

Leaves. Tips - Burnt

Leaves. Curl up

4y ago

3

Solved

Crispy leaves?Crispy leaves developing as it flowers. Seems to just be those that had some spots from what appeared to be a magnesium deficiency. I hit it with cal-mag and the spots stopped but recently the most affected leaves are shrivelled. Only maybe 4-6 leaves right now.

Leaves. Curl up

Leaves. Other

5y ago

1

1

Solved

Brown area on leaves Bonjours à tous. Voilà certaines feuilles de ma plante deviennent attrape des tâches brunes. J'ai donné du GHE essential (oligo-éléments) and cal magnifique (0,3ml/L) ce matin ainsi que du biographie Bloom. Je pense à une carence en magnésium et vous qu'en pensez-vous?

Leaves. Curl up

Leaves. Color - Dark-brown

4y ago

4

2

Solved

Dying leaves help Leaves dying Turing yellow and brown

Leaves. Tips - Die

Leaves. Curl up

Leaves. Color - Yellow

5y ago

2

3

Solved

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

Upward curling leaves Yesterday applied heating mat bcs temp was dropping to 14C nights. Now it stays 30C allday with RH 30%. I have found my seedlings looking like this morning. Leaves look dry. Could this be the excessive heat shock? Or soil dried up quick? What should I do? Water? Raise RH? How?

Leaves. Curl up

3y ago

1

1

Solved

Curled Sugar Leaves Curled Sugar Leaves. In RDWC, others not showing. Fans leaves not showing. Doesn't seem to affect too adversely but the plant is slightly smaller. I have noticed in previous grows. Any ideas 4 my future grows? Thanks 😊 Growmies!

Leaves. Curl up

3y ago

5

5

Solved

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?

Leaves. Curl up

5y ago

5

2

Solved

OrganicAutomatic

Tips curling up I noticed the tips beginning to curl up. I did gave her bio grow in the last two weeks 0.5ml/lt ph 6.5 almost every watering i used bio grow. I have another 8 plants of different breeds and none of them showing anything wrong. I wander if its the nutrients or perhaps the light?

Leaves. Curl up

3y ago

3

2

Solved

Leaves curling and pointing down I'm getting worried with these leaves pointing down. Everything is the same for all 3 plants. I noticed signs of flowering on girls N2 and N3. What should I do guys? Help please 😭🙏

Leaves. Curl up

Leaves. Twisted

Setup. Strain - Autoflowering

3y ago

5

5

Solved

Little brown spot and leaves become yellow hi my leaves start to become yellow and some brown spot starting to appear and my leaves also begin to curl up on themselves and i wonder why If someone have an idea it will be great thanks in advance for your help.Ps:ive feed them only once 2weeks ago and rince it one week after

Leaves. Curl up

Leaves. Color - Yellow

4y ago

11

6

Solved

Leaves curling on sides Okay so the leaves are acting weird and kinda curling in on the sides. Like it's heat issue. I think maybe to strong LEDs. Idk. It's only 79°f Light (ESv300) is on lowest setting @32in away. Fed GH flora trio. Only 237ppm. The leaves are also yellowing between veins.

Leaves. Curl up

Leaves. Veins - yellow between

3y ago

3

4

Solved

Maggie_de_Block

Curling new growth All of my new growth is curling a little bit. I dont think it's N toxicity, but it's also probably not heat because all of them look like this. Is it N toxicity or something else? Thankss

Leaves. Curl up

5y ago

2

2

Solved

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

4y ago

3

3

Solved

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.

Leaves. Curl up

Plant. Too short

6y ago

5

4

Solved

Heat stress???Hey look at one of my babies is it a heat stress? Finally got temperature managed 🤦‍♀️🏼 Sud I do something with her or she’s gonna sort herself out? Thanks

Leaves. Curl up

Plant. Other

6y ago

2

2

Solved

Leaf problem EC - Beginner in hydro needs leading tips -3rd week Dear Community, i started my tent120*60 with 3Aquafarm units, using a mars hydro TSL2000 300W,45 cm form the vase, ca. 40% dimmed. EC 1.7ms / 0.88 ppt - PH 6, i'm following the full AdvancedHidrop.ofHolland schedules for nutrients. can you get What s the matter? bless

Leaves. Tips - Burnt

Leaves. Curl up

Feeding. Schedule

5y ago

4

3

Solved

What is this leaf telling me? I dont get her? Is this shortage of N? Started flowering 2 days ago.

Leaves. Curl up

6y ago

2

3

Solved

LEAVES AFTER FLUSH When I flushed my plants all leaves went looking down as normal, but now that they dried they kept that shape and the tips that are really dry (due to previous overfert) are curling all weird...is it ever gonna go back to normal? Is it still good anyways?

Leaves. Edges burnt

Leaves. Curl up

6y ago

1

1

Solved

Curling dark leaves Advice for what i think is nitrogen deficiency, have flushed with ph 6.3-6.4 water about 900ml

Leaves. Curl up

4y ago

5

5