Chat

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

Recommended

Recommended

Grow QuestionsDiscolouration and curling

Discolouration and curling

DixonCiderstarted grow question 4 years ago

Noticing some discolouration of a couple leaves and some slight curling. What’s going on?

DixonCider

DixonCider

Open

Leaves. Curl up

like

Answer

KenSpliffeyJranswered grow question 4 years ago

Looks like it could be afew things. Heat stress could be causing the curling. The brow spots look like a calcium deficiency to me. Happened to me when my ph was off. I second making sure your calibrated. And also make sure your ph is on point when feeding. Also is your hand feeling uncomfortable under the light? It could be to close to the plant but hard to tell in the pictures. Your issue I most likely calcium deficiency /Ph issue.

2 likes

Complain

Experimentgreenanswered grow question 4 years ago

Hello Any chance you've recalibrated your ph pen lately just to make sure its running accurately? Otherwise those high powered lights will cause curling(especially the curl upwards) and discoloration if they're putting a lot of heat out and getting a tad close to the plants.

1 like

Complain

neuraxisanswered grow question 4 years ago

High there! Small tips : Close your light when you take picture, the coloration make troubleshooting very hard. Look like heat stress but can't be sure of anythin because everythin is orange :D

2 likes

Complain

Similar Grow Questions

Solved

we have this Gelato 33 plants on their 1st weed of planting on 40L Pots, it looks like yhe plants are stressing by my Point of View , the temp in the room is 29° and night 16°. They have been 1 week 24h light schedule and now we just made it 18/6h . Would need some help on it.

Leaves. Edges burnt

Leaves. Curl up

Leaves. Color - Yellow

2 months ago

2

2

Solved

Help: potential over fertilisation or over waterning I used Biobizz bio grow, 2ml/L and sprayed them more than usual. The tip of the leaves is getting yellow. 2 plants have the leaves pointing down and seem more textured and tick. The other 2 (the biggest) seem better, but the yellowing of the leaves is more evident. Check the diar

Leaves. Curl up

Leaves. Color - Yellow

Feeding. Other

2 months ago

5

2

Solved

Day 20 Flower. Leaves curling Leaves curled over 12 hour light cycle. Ph 6.0. Ppm 950. I have been battling ph drop for a week. Lowered Ppm to 900 from 1100. Seems to have stabilized the ph and now the leaves are doing this. I’m looking to do the day 21 strip of most leaves tomorrow. Should I be concerned?

Leaves. Curl up

Leaves. Color - Yellow

2 months ago

3

Solved

Plant was stuck in shell with leaves growing 3 days ago i planted my seedling. It emerged, but until today, it couldn't pull off it's shell. I helped it a bit and in a little under 3 hours, it's like this. The leaves even grew inside, is it gonna be fine?

Leaves. Curl up

3 months ago

1

7

Solved

Looks like light stress I assume with the canoe and curl. Moved light from 100% to 75% Stil at 35in from canopy. Should that do the trick? Also should I have already had it at 75% and moved it to 100% during flower? Or how do you guys do your light power

Leaves. Curl up

3 months ago

3

4

Solved

Leaves turning yellow and brown with sligh curl up One of the lower leaves is slowy turning yellow and brown, i tried to fix the issue with a light dose of fertilizer but it did not help (affected area still spreading). I am growing in biobizz light mix and i'm at the end of week 2. does anybody know what is happening?

Leaves. Curl up

Leaves. Color - Yellow

17 days ago

2

2

Solved

Leaves Curling Up & Brown Spots The leaves started curling upwards, turned brown about 2mm at the top and a lot of small brown spots appeared on the leaves. I don't understand why or how... Im using BioBizz nutrients, little less than recommended. Watering every other day with 2L PH 6.3 20°C - 24°C

Leaves. Curl up

Leaves. Color - Dark-brown

12 days ago

2

Solved

Surplus or deficiency?Can't tell if there's a surplus of nutrients or a shortage of potassium? One plant looks like nitrogen burn and the other two look like theyre maybe a little k deficient. Was thinking of chilling out on the feed on the burnt one and just feeding micro to the other two. Thoughts?

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Color - Yellow

25 days ago

5

4

Solved

New Leaves Twisting Why are new leaves "twisting" like this? This started in early flowering stage. I have 3 other plants, but only this one have this issue. 19°C - 23°C 55% - 65% RH 6.3 PH 150W - 45 cm height

Leaves. Curl up

Leaves. Curl down

Leaves. Twisted

23 days ago

1

Solved

leaf diseases Yellow and brown spots with leaves curling up, have flushed a bunch and got ppm and ph adjusted right and move my light back up so my PAR is around 950. Any help would be appreciated?

Leaves. Curl up

Leaves. Color - Yellow

23 days ago

3

3

Solved

Partially Dry leaves in grow phase Hello there, What's wrong with my leaves, I have a few ones in my box, I m in Coco and in grow phase

Leaves. Edges burnt

Leaves. Curl up

Leaves. Twisted

a month ago

2

2

Solved

What is she telling me?Anyone know what she’s going through? Four weeks old, using tap water with hydroguard and GH FloraTrio nutrients. PH seems to go up from around 5.6 to 6.1 in a matter of hours. Ppm=635 EC=1.2 right now. Been going very easy on nutes, about half strength still. Could that be it?

Leaves. Edges burnt

Leaves. Curl up

a month ago

2

4

Solved

Nute burn or environment?Leaves curled on edges,tips brown and brittle falling off. 40days in flower. Temp floats between 20-26°C night and day, hunidity 50-65% measured top of the canopy wifi sensor. Good ariflow lights are 500W 3ch 75V/100B/100UV ontop and 400W (6 bars sides and under)

Leaves. Tips - Burnt

Leaves. Tips - Die

Leaves. Curl up

a month ago

3

4

Solved

Curled leaf tips Nevilles Haze My Neville's haze is starting to be hard to look at. Cant tell if Is watering issue, nute burn or excess. I thinking maybe K deficiency. Shes been drinking close to 4 gallons of water a day or more and soil dries very quick. After watering I notice the new growth looks good

Leaves. Tips - Die

Leaves. Curl up

Leaves. Color - Pale

a month ago

11

6

Solved

Leaves curl up and yellowing Beginner question, as usual (first time growing anything in my life tbh). My 2 plants don't look too healthy, especially one of them. Leaves curl up and yellowing (or not, I am not sure). What am I missing? Thanks!

Leaves. Curl up

Leaves. Color - Yellow

6 days ago

2

2

Solved

Week 2: One of the plants still doesn't look good + other beginner questions :)Second week and one of the plants has weird spots + leaves curled. Not sure what to do. Do I overwater? Is it some kind of disease or deficiency? No idea. Also, when should I start feeding the plants? And how much water do I need at this point? 😥

Leaves. Curl up

Leaves. Color - Yellow

Leaves. Color - Mottling

2 days ago

6

6

Solved

Need help Watered with fertilizer between day 28/29 After that : - some Leaf pointing upwards , twisted - some Leaf pointing down , twisted - Plants will not stretch , are bushi - yellow leaves Photo are from day 28/29/29/29/30 , created my gw today ask me if you need more infos

Leaves. Curl up

Leaves. Curl down

Setup. Strain - Autoflowering

3 days ago

6

Solved

Leaves curling up and down and yellow leaves What could be causing this?

Leaves. Curl up

Leaves. Curl down

Leaves. Color - Yellow

2 years ago

1

6

Solved

heat stress slowing development?why is half of the tent showing large crowns and pistils and the other isnt? and why are some plants suffering heat stress when they are all in the same tent?

Leaves. Curl up

2 years ago

3

2

Solved

Help please autoflower problem Hi so my autoflower is 9 days old and at the tips is starting to curl up it isn’t however loosing colour what can I do to stop this it started with only one tiny tip curled up to now being a few more

Leaves. Curl up

2 years ago

2