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 QuestionsLeaves Folding in Half

Leaves Folding in Half

Untiedmymindstarted grow question 4 years ago

Noticed my leaves are starting to fold in the middle. One leaf is curling up which i know is from heat are the leaves that look like they are folding in half caused by heat as well?

Untiedmymind

Solved

Leaves. Other

likes

Southofheavenanswered grow question 4 years ago

Yeah they do that to decrease surface exposure, if you cant bring down the heat try increasing the humidity so the leaves dont have to sweat too hard. It looks pretty minor and fully reversable, good stuff

1 like

Complain

Selected By The Grower

Greenwolvesfarmeranswered grow question 4 years ago

Siii , mucho calor :/ si no pueden aumentar la humedad del cuarto , podrías intentar con uso de intractor y extractor de aire , posicionalo justo en la parte superior junto con el panel de luz ...así el aire frío que pasa. Ayudará a bajar la Temperatura del foco l panel y saliendo enseguida por el extractor de enfrente ..obviamente esto se logra con cooltube y mangas de aluminio , otra opción es añadir un intractor de aire posicionado en la parte de abajo del armario :o

2 likes

Complain

Mr_Weeds_Autosanswered grow question 4 years ago

Yes, this is being caused by heat stress. The leaves are curling upwards around the edges to form a canoe-like shape which is an apparent sign of heat stress. Your temperature looks fine so I'm guessing the light is too close, try going 24" inches above the canopy instead of 18" inches, it might be too much for the plant.

1 like

Complain

Similar Grow Questions

Solved

Yellowish leaves with brown spot.Why are my leaves starting to show brown spots and also getting a yellowish tint? I did recently lower the light. Could this be light burn?

Leaves. Other

3 years ago

1

3

Solved

Leaf edges gnarled?Why are the leaf edges gnarled like this. Is it lacking in a nutrient?

Leaves. Other

3 years ago

1

1

Solved

Calcium deficiency??Calcium deficiency? This is only my second run, and first isn't done yet, so I haven't seen this before. Would you say calcium deficiency?

Leaves. Other

3 years ago

2

3

Solved

Light spots on the lower leaves of my plant Light spots on the lower leaves of my plant, I looked at a lot of websites but I can't seem to figure it if and what deficiency this would be, are they just getting to little light?

Leaves. Other

3 years ago

3

Solved

Too late to defoliate?Is it too late in flowering to defoliate my plant? I have changed from a 600w bulb to a 660w led so getting a bigger foot print, started @ 25% for 2 days then will go 50% and repeat until 75% , plant might be too close to the top of the tent for 100%. Also changed air pump

Leaves. Other

3 years ago

3

4

Solved

What is that extra leavefinger on the middle of super silver haze? Is this typical SSH or what did I do now?

Leaves. Other

3 years ago

3

5

Solved

manchas nas folhas o que pode causar essas manchas nas folhas? são os primeiros sinais que encontrei hoje, até ontem nao existiam as manchas.

Leaves. Other

3 years ago

3

3

Solved

Too late to trim leaves leaves on auto?I’ve heard it can be bad for the plant to trim leaves on an autoflower. I’m about half way into week 11, plant looks healthy and buds are nice but I have a bunch of leaves under the main canopy not getting much light. Is it ok to remove them?

Leaves. Other

3 years ago

11

7

Solved

Yellowing and wilting of leaves Hi Growers. My leaves are currently looking like this. I wanted to ask for some help or guidance as to what May have caused them to change colour like this

Leaves. Edges burnt

Leaves. Color - Yellow

Leaves. Other

3 years ago

2

2

Solved

Uh oh... Leaf problems! Any thoughts from the more experienced folks? First grow for me...I diagnosed these pics and added some Tiger Bloom (2-8-4). Now I'm thinking I need some CalMag. Do you have any recommendations? Adding the Tiger Bloom was the first nute I have ever added. See substrate used. 4 of 6 plants have variations of this and it's slowly getting worse.

Leaves. Other

3 years ago

5

4

Solved

First true leaves deformed and white parts sticking out. What’s going on?This is a Dutch Passion Auto Brooklyn Sunrise, germinated in a paper towel then transplanted into soil. It broke through two days ago and after the seed hull dropped revealed two white parts coming out of the ends of the somewhat deformed first true leaves. Never seen this before

Leaves. Other

3 years ago

7

7

Solved

Faint Purplish Spots Leaves have faint large spots in the center/top of the plant. Light is 8” from the center of the plant. Almost purplish/gray color. I have a mid grow flush coming up this Saturday. Long flush? Is the light distance to blame, something else?

Leaves. Other

3 years ago

5

4

Solved

Purplish Leave Coloration This is a note for my previous question. Wanted to pass along my auto feeding schedule is in my germination week if it helps any. Also my Koolbloom ppm wasn’t set to ml/gal so that was looking way off in a number of weeks so I updated that

Leaves. Other

3 years ago

5

4

Solved

Do leaves after a CAlmag def recover?

Leaves. Other

3 years ago

1

3

Solved

Leaf Just did some defoliation on the plants. Do i have to much nitrogen in the leaves also why is the leaf veins going purps.

Leaves. Other

3 years ago

5

Solved

Pet food Do you think it's safe to feed my fan leaves to my rabbit?

Leaves. Other

3 years ago

4

Solved

leaves down I just turned out the light, cause the leaves are down, what can it be?

Leaves. Curl down

Leaves. Dropping off

Leaves. Other

3 years ago

1

1

Solved

Identify sex before plant shows signs Is there a way to identify sex before plant actually shows it ? Cannabis is illegal in my country so i probably cant send leaves to a lab legally right ?

Leaves. Other

3 years ago

4

6

Solved

???The foliage of my plant looks bad. Is this unstable genetics? Should i just start over with another bean?

Leaves. Other

3 years ago

2

Solved

Uhoh. Droopy plant with brown spots on leaves Something is wrong. Plant has been droopy like this all week and I'm seeing brown spots on some fan leaves. No idea what's going on. Any ideas?

Leaves. Other

Plant. Wilting

3 years ago

7

8