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
Yellow leaves, over feeding?
Spicy_lemonstarted grow question 3 years ago
Hey everyone I noticed today that the leaves suddenly started to turn yellow, what should I do?
likes
GrowingGrannieanswered grow question 3 years ago
This is a calcium, NOT a potassium deficiency... and, while it is common, it is NOT normal and IS a problem! In flower, plants need more calcium so introduce some Calmag to your nutes but only once a week... you won't see any improvement in the leaves that are already affected but the problem should not spread....
Good luck!
Youthmananswered grow question 3 years ago
It's a P deficiency but DON'T WORRY! It's perfect and normal at this stage of flowering, keep flushing for one week and the you can harvest :) if you want you can cut off the died leaves, to avoid mold, but it's not necessary
1 like
Complain
Similar Grow Questions
Solved
luxgrower
Yellowing leaves & tips curling down on 14th day. Coco / Autopot / Hesi / Mars Hydro fc-1500Would gladly use some help with my first grow 🙏
2 main reasons come to mind after googling:
1. I overwatered thinking it's hard to do since I'm using the Air dome.
2. Too intense light. Was checking a lot of growers that actually grow 24/0 and went for it 75% 40cm.a month ago
9
5
Solved
XtoVall
BT21 Probleme?Hallo liebe Grower, bei mir ist BT 21. Kann mir jemand sagen warum die Blätter der Blütenstände so „Neongrün“ werden ? Liegt es an Nährstoffen oder zu viel Beleuchtung? Die Lampe ist recht nah dran da keine Luft mehr nach oben ist
Wäre super wenn jemand einen Tipp für mich hätteLeaves. Tips - Burnt
Leaves. Color - Yellow
a month ago
2
2
Solved
Mozartek
Manchas en hojaHola!
Aparecieron estas manchas en una hoja de una GG#4 de zamnesia en su quienta semana vegetativa.
No es algo que me preocupe, ya que la planta tiene una apariencia sana y crece vigorosa. Pero nunca vi este tipo de manchas y me gustaría saber su posibles motivos.
Un saludo!Leaves. Color - Yellow
Leaves. Color - Pale
Leaves. Color - Mottling
a month ago
3
4
Solved
HoneyBlunt42
turned yellow, what's the problem?The big burdock at the root started to turn yellow a couple of days ago, the tip is drying and bending. This is a deficiency of phosphorus and potassium on the 45th day from the nut (7th week) - or am I wrong? How to fix it?Week 7
Leaves. Color - Yellow
2 months ago
4
4
Solved
HarrrryyyPoota
Hydro 3 plants 30 l experymentHey im in 11 week of grow is hydro i used canna a+b +calmag olso bacteria My ppm is 450 when I feed and before feed drop to 350 ppm normaly i add 30-50ppm cal mag leter rest to 450ppm a+b what this yellow spots minds i must go witch ppm down or up ?Leaves. Color - Yellow
a month ago
1
2
Solved
Hate1312
Nährstoffmangel?Hallo, habe ein Problem bei meinem grow.Bt33Habe 3 Stecklinge in 13l Topf (FEM Mimose, Gorilla ,Wedding)
Zelt : 120x60x180 Lampe :Sanlight evo 4×120 (265w)100 % 45 cm Wasser 12l alle 3 Tage calmag+Bittersalz+algamic+activera
Dünger Ghf Bloom
Calmag+Phosphormangel glaube ich?Leaves. Color - Yellow
Leaves. Color - Pale
Leaves. Color - Mottling
a month ago
2
1
Solved
Lotigreen
Light streets? Or nutrient burn?Hols esto puede ser estrés por las lámparas? Empieza en la parte superior y en la parte inferior apenas se ve. Las hojas se vuelven amarillas desde las puntas hacia el centro. Sobre todo en la parte de arriba. Esta debajo de una lámpara de 200wLeaves. Tips - Burnt
Leaves. Color - Yellow
a month ago
1
3
Solved
DuckeedWizard
Why she's sad?Sorry for the pic quality lol
She has burnt tip and yellowing on the leaves
and shes very very slowWeek 2
Leaves. Color - Yellow
a month ago
5
2
Solved
GEESTGROW
Yellowish color at the tips and wrinklesMy plant has been yellowing for a day now, I think it is a deficiency of some nutrient but I don't know what it could be, I have thought about buying NPK. At the same time, there are also a couple of leaves that have slightly wrinkled the tip and have been half lowered.Leaves. Tips - Burnt
Leaves. Color - Yellow
a month ago
4
4
Solved
Peweez
Could someone help me to identify the issue my plant has?This girl isn't looking healthy anymore and I need to figure out why. What I did: I topped her pretty early but she recovered well (you can see it in my grow diary). A week later I transplanted her from 0.5L pot to her final autopot 14L. After that she had a hard time recovering.Leaves. Color - Yellow
Leaves. Color - Dark-brown
22 days ago
2
3
Solved
FeebleSnane
Yellow leaf edgesI have a couple plants that are about 5 weeks old, and one has started getting yellow edges around the leaves. I feed them with worm tea, kelp, and calmag every other week, but it's a light dose so I think this is a deficiency and not a toxicity.Leaves. Edges burnt
Leaves. Tips - Burnt
Leaves. Color - Yellow
22 days ago
1
1
Solved
Shemmie
lower leaves yellowing in 3 days?Over the past 3 days my 2nd plant lower leaves started to yellow. Both are fed the same amount and the same rates. I noticed the one that is yellowing the leaves are upwards and that is a good sign, but the lower leaves are yellowing too fast. I am unsure what could cause this.Week 2
Leaves. Color - Yellow
a month ago
2
6
Solved
4EverGreen
Losing vigor and yellowingSorry I don’t have a diary for this grow. I did collect some runoff on one of my girls so hopefully this can help for giving assistance. This is only my 3rd grow and the first 2 went very well but this one isn’t, all plants have lost vigor, are growing slowly and are yellowing.Leaves. Color - Yellow
a month ago
5
6
Solved
Cannaisseur90
Cant figure this outAny input on this issue?!?! Can't figure out problem i keep facing. Starts in flower around week two. Auto in soil only fed once and added fox cal mag a few times.Leaves. Edges burnt
Leaves. Color - Yellow
Leaves. Color - Mottling
16 days ago
12
11
Solved
Andreskaja
My plant is in the second week of flowering and is starting to yellow at the bottom with spots on the leaves. I am using coconut with boom guano and for irrigation for now 6ph and I have not fertilized during flowering. Does anyone know what it is due to?Leaves. Color - Yellow
17 days ago
1
Solved
boundar48
Runtz XL Auto leaf nutrient issue, any help is kindly appreciated.My Runtz XL Auto from Sweetseeds started having some leaf nutrient issues and I am not entirely sure what's the problem over here. It's my second grow so I don't have that much knowledge ...learning day by day😁Leaves. Color - Yellow
18 days ago
1
Solved
TheObserver
Fatal ovewatering? Will she survive?Ugh! One of my two plants Is dying. I suspect overwatering associated with some other issue I can't spot properly. 58 days flowering. It was my first flushing session, not a good start.
Her sister has no problem. Poked holes in the dirt, raised temp, maxed the fans. What else?3 months ago
2
2
Solved
Luntis
New leaves are yelowHello can anyone tell me what is wrong ? it's a 3 week start and apart from the yellow new leaves it seems to be growing slowly. thank youLeaves. Color - Yellow
2 months ago
6
Solved
Skunk66
Leaf turning yellowI'm a beginner.. im growing GG#4 auto.. leaf are turning yellow at flowering is it normal or nutrition lockout or something... should I flush.. ph is 6.3, Ppm 850, week 8, nutrition general hydroponic micro, grow, bloom, silicon phosphate, seeweed extract, and humic acid,Leaves. Color - Yellow
2 months ago
2
2