Vote Now 🏆 for the Grow Awards 2025!

Chat

By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms

Accept

Recommended

Grow QuestionsUpwards curled leafs with brown spots

Upwards curled leafs with brown spots

HighZenBergstarted grow question 4 years ago

The leafs on one plant curl upwards with brown spots. all leafs more or less show these signs. Does anyone know, what it can be? Also the developement of the flowers is slower in comparison with the other 2 plants

HighZenBerg

Solved

Leaves. Curl up

likes

horsemouthanswered grow question 4 years ago

hi, your plant has at least 2 problems: too much ligh and calcium def. cheers

1 like

Complain

Selected By The Grower

smoke24answered grow question 4 years ago

Move your light to 22 inches above the canopy, you have a good case of light stress. Happy growing.

1 like

Complain

Fruitgroweranswered grow question 4 years ago

This particular plant might be in a hot-spot in your tent. If the lights are powerful and the airflow isn't adequate, there will be points in your grow area that retain heat. This could be the issue.

1 like

Complain

MomoCookieanswered grow question 4 years ago

To much light!! Try 15-20% less light if your light is Dimmable otherwise put your light 10-20 cm higher

1 like

Complain

Mikewithgreenthumbs420answered grow question 4 years ago

https://www.growweedeasy.com/cannabis-plant-problems/heat-light-stress go to this site has all plant problems hope this helps

1 like

Complain

Similar Grow Questions

Solved

Yellow brown spotted Leaves Hi. The first Sweet ZZ auto. Second NL auto. PH water before watering 7.0. Whats wrong with these both? Thx.

Leaves. Edges burnt

Leaves. Curl up

Leaves. Color - Yellow

3 years ago

1

1

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

3 years ago

11

6

Solved

Curling and twisting leaves (main bud polyploid?)Hi cannafam, the leaves of this Blue Amnesia Auto are turning, twisting and curling up a bit.. Anyone know if overwatering might be the problem? Have been watering (and feeding) her as much and as regularly as the others (no prob there), but she is a bit smaller and skinnier

Leaves. Curl up

Leaves. Curl down

Leaves. Twisted

3 years ago

2

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.

Leaves. Curl up

Leaves. Color - Yellow

3 years ago

3

Solved

Upper leaf Although the general condition of the plant looks good, some upper leaves started to claw. I would like to get expert opinion on the cause and solution of this.

Leaves. Curl up

3 years ago

2

2

Solved

Probleme Habe verbrannte Blatt spitzen.und diverse andere Fragen in Bezug zu Blättern.wäre sehr dankbar für Hilfe.bild 1-7 calmag Mangel? 8-10 diverse Probleme was denkt ihr dazu?die letzten 2 Bilder würde mich eure Meinung interessieren.mein erstes mal habe kein Vergleich.6 blütewoche

Leaves. Too few

Leaves. Tips - Burnt

Leaves. Curl up

3 years ago

4

3

Solved

Calcium deficiency?I'm not so sure if it's calcium deficiency, what do you think? Watering 100ml of water minimum. Using 1ml calmag/per 1L(and other nutrients like N,P,K)..soil comes nutrient free. Should I water her more and add more calmag or is this a different deficiency?

Leaves. Edges burnt

Leaves. Curl up

Leaves. Color - Pale

3 years ago

3

2

Solved

Hi all, I have had very slightly yellow tips on this plant for a while. She is mid week week 10. Two days ago the leaves started to curl and the yellow has spread slightly. Last night I flushed her with PH water and have dimmed the light slightly, anything else I can do 🤙thanks

Leaves. Curl up

Leaves. Color - Yellow

3 years ago

4

5

Solved

Getting out of the ideas - VPD, nutrients or deficiency?I'm getting out of the ideas as the foliar symptoms proceed. Lowered EC down to 1.8 from 2.2, pH in range. VPD is getting problematic as the plants seem to be respirating a lot during the day and it rises tent RH sometimes up to 70% - exhaust duct fan wont keep up. Temps 22-24C

Leaves. Edges burnt

Leaves. Tips - Burnt

Leaves. Curl up

3 years ago

1

Solved

Curling leaves with purple tinge Had to leave plants for four days. Watered with 1L of water before I left. Arrived to 31c temps and leaves curling with a purple tinge to older leaves. Assuming heat stress mixed with overwatering. Thoughts?

Leaves. Curl up

Leaves. Color - Dark-purple

3 years ago

1

Solved

Health problems?What could this be? PPM: 700 - 800 Temp: 26C (79F) Hum: 50-60%

Leaves. Curl up

Leaves. Color - Yellow

3 years ago

7

6

Solved

Possible Heat stress?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?

Leaves. Curl up

3 years ago

1

1

Solved

development problems есть проблемы с растением. нижние листья сохнут и появляются болячки. верхние листья кривятся и закручиваются, есть не здоровый цвет. Ph 6.5 PPM был 600 вчера снизил до 420. подозрения на передозировку либо проблема с PH. Смотрите фото второй недели (10 день)

Leaves. Curl up

3 years ago

4

6

Solved

Problem on the leaves Hello, what do you think about the leaves? This problem occurs only on one of my plants. Thanks a lot

Leaves. Curl up

3 years ago

1

3

Solved

Wasting my time or keep going?Hey I'm definitely new to growing. Put a seedling in oven forest and not having issues with leaf burn. Any way to repair or just trash it and start over?

Leaves. Tips - Burnt

Leaves. Curl up

3 years ago

5

6

Solved

Are curled leaves on buds normal?Hey everyone! These leaves has been there for a long while but now I'm just worried about it. So are the small curled leaves on the top of the buds normal? Might it be a reveg?

Leaves. Curl up

Plant. Other

3 years ago

2

Solved

Curling leaves - heat stress?Some of the leaves are curling. Sits next to another indica that doesn’t seem to be affected. Temps here in Arizona have been 100-110 for weeks. I presume this is heat stress but would 💗 2nd opinion. She’s in the most protected area of the garden, so probably can’t fix this.

Leaves. Curl up

3 years ago

1

4

Solved

Leaves curl and growth retardation :(Hi, anyone can help me ? What about this leaves and plant growth retardation ? nitrogen deficiency or heat ? :/ Red Poison Auto from Sweet Seeds Day 25 ppfd 300-400

Leaves. Curl up

Leaves. Twisted

3 years ago

3

3

Solved

Curling on leaves There is some small curling on the leaves. Is that problem. Visible in week 3 photos. Thanks!

Leaves. Curl up

3 years ago

2

2

Solved

Nitrogen lockout?I've yellowing bottom leaves and yellow top all over, is it nitrogen deficiency and nute burn?

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Color - Yellow

3 years ago

1

1