Vote Now 🏆 for the Grow Awards 2025!
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
How do I fix the yellowing/brown leaves?
Canadianeh416started grow question 4 years ago
I used to have a small fan blowing directly on the plants and now I've moved the fan to blow at the light. Also raised the 1000 watt LED higher so it's 24 inches above the soil. Also checked the PH of the water coming out of the bottom of the plants and it's between 6-7.
Open
Leaves. Color - Yellow
likes
Answer
GingaNinjaGeneticsanswered grow question 4 years ago
You measure distance to light from the top of the canopy not the soil..
likes
Complain
Similar Grow Questions
Solved
hooolian
Yellow leaves - Sohum living soilHave been growing these in sohum living soil - they are nearly 9 weeks old - they look great but there are many yellowing leaves - would a small dose of blooming nutrient help at this stage? or is all normal and should just use water as normal til the end? thanks!Week 8
Leaves. Color - Yellow
2 years ago
2
2
Solved
BullitRoffa
Iemand tipsGaat ze goed of moet ik iets toevoegen wat ze te kort komt meschien of niet iemand tipsWeek 4
Leaves. Color - Yellow
2 years ago
1
Solved
Cannabisflakes
Little seedling having a hard timrSo guys;
I'm worried about this seedling. She's having trouble on keeping up with her sisters. I noticed a yelow color on their tinny tips 🤔
Cotiledons got brown pretty quickly too.
She took longer to "open" the cotiledons after popping from the soil.
Should I do something?? 🙏2 years ago
3
3
Solved
Needweed
What deficiency is thisI got my bubble kush auto from RQS 65cm high here, in week two of flowering. This sign appears on older leaves. 4 days ago i did a flush and after dry, lightly fertilised with 450ppm. Last watering with runoff check. The ppm was cca the same(450).My tap water is 330ppm already.Leaves. Color - Yellow
2 years ago
1
2
Solved
Cannabis_Ninja
Weak yellowing leavesNot every single time but quite often my plants are turning yellow in the middle of flowering. It starts from bottom and follows to top. I can basically “take off” leaves off stem and the upper ones getting dry and brittle. I’m also quite sure the ph level is correct. Any guess?2 years ago
1
1
Solved
Viccrazyweed
Critical showing deficiency or excess, anyone know how to solve it???One of my beauties is showing for the first time a nutrient issue, a couple of leaves are showing yellow colouring, the very rest of the plant is homogeneous deep green so i assume she is almost fine, but i really want to listen to her and care, I think it could be nitrogen def2 years ago
2
3
Solved
uktuk
Calcium / PH issues? Did I take the correct steps?Am I on the right track to remedy my plant's issues? Seems like calcium deficiency to me. Soil test comes in at just under 6.5, my reservoir water going in is 7.3ph, in case its actually a lack of calcium and not the PH i've top dressed gypsum (and epsom salts).2 years ago
2
3
Solved
Dgessy
feuilles du bas jaunesfeuilles du bas qui jaunissent et petite taches marrons. Je ne vois pas se que cela pourrait être.
Merci pour votre aides 😊💪Week 3
Leaves. Color - Yellow
2 years ago
1
4
Solved
KhunBabe
What is causing the yellow leavesDec 29 - Transplanted to 30cm. Plain soil mix. Did not water
Dec 30 - watered with nutrients at 350 ppm about 500ml
Jan 2 - starting to see signs of yellow on lower leaves
Jan 3 - cotyledons have turned solid yellow, two main leaves yellowing
Jan 4 - no change
Jan 5 - leaves look2 years ago
6
5
Solved
Whiteybulger1814
Magnesium deficiency correction with Epson salt while running autopots and Gaia GreenOk I'm having a bit of magnesium deficiency and from my research I going to use Epson salt to correct it, I'm currently running my grow in autopots and I'm running full organic with Gaia Green and I want to know what people think for those who have experience, do I mix a batch inLeaves. Color - Yellow
2 years ago
2
2
Solved
aBUDabove
Leaf Diagnosis NeededI need help. Leaves are turning yellow at top of plant only. And only on American Pie. Not Northern Lights. I am using a Sonlipo SPC2500. Bloom mode. Is it possible to have lower ppfd levels and still get light burn? Thanks in advance.Week 9
Leaves. Color - Yellow
2 years ago
6
3
Solved
Pokes_smot420
Is she hungry for nutes or is this a deficiency (new grower)Mid week 5ish, mature fan leaves and some newish smaller leaves yellowing starting from tip.
Had nitrogen toxicity in its early life..
Ph at 6.5 watering about 8-10 oz every other day or 3. Just did a top dress on 12/29 only 1.5 tbsp of power bloom and .75ml fish shit.Leaves. Veins - yellow between
Leaves. Color - Yellow
2 years ago
6
Solved
6ix6ix6ix
Top new leaves yellowing and twisting.My problem from the previous question is developing. The new leaves are yellowish and now they started twisting.
PH is 5.8 in 6.0 out
EC down from 2.0 to 1.75
the lower growth lack this problem, could be light burn? Was 20cm away (150w)
Maybe its a deficiency i can’t understand2 years ago
5
7
Solved
BullWeedDog
5ta semana de floraciónEstas hojas son de la parte media que puede ser?? boto la mayoría de las hojas de la parte baja y en la parte superior están amarillas pero creo que es por lo cerca que está del foco. Ramas inferiores que no llegaron a la luz con la pintas caídas y marrones!!Leaves. Color - Yellow
Other. General questions
Plant. Other
2 years ago
3
Solved
Kirky
Yellow fan leafsYellow dry fan leafs well into flower ( week 17 from seed ) is this normal ?Leaves. Color - Yellow
2 years ago
1
5
Solved
StardewGrow
Yellow dots near veins of leafs - Week 4 autoflower gsc in space binNoticed these yellow dots two days ago. It is now 1 day until it has been 4 weeks of veg. Two days ago I have it it’s first does of nutrients, Miracle-Gro 20-20-20 plant food. Just gave it another shot today. Is there anything else I should do to keep the plant healthy? Thanks2 years ago
1
4
Solved
johnehazeharvester
Top leaves are yellowing in flowering-Is this Nutrient deficiency or excess or lock out?I am growing 3 Auto's.
One of the plants seems to be much more affected than the other one.
near harvest/Cloudy Trichomes no amber
I just gave them all a feed with the recommended Fox farm nutrients which is twice the concentration they normally get.
Any ideas?Leaves. Color - Yellow
2 years ago
1
1