The Grow Awards 2026 🏆 
Yellowing leaves
Bluntblazer66started grow question 5y ago
Yellowing leaves on young plants
Not sure why the plants are yellowing at the bottom
I added some calmag thinking it maybe a nutrient deficiency
likes
Thumbnail83answered grow question 5y ago
Nitrogen starts yellowing at the bottom, if you have abnormal growth or yellowing on new growth it would be calmag.
JoseTodoLocoanswered grow question 5y ago
I can't see it clear on the photo. Make sure the PH pen is calibrated, also take a look at the new growth after you added the Calmag
1 like
Complain
Mr_Cannab1siranswered grow question 5y ago
Most likely nitrogen deficiency. I know nothing about hydro though, feed needs increasing if it's draining the leaves. It's basically eating itself to survive
2 likes
Complain
Similar Grow Questions
Solved
ToRuL88
Consejo número plantas y deficienciasTengo 27 esquejes en 1,5x1,5 y 650w de led. ¿ me aconsejáis dejar alguno menos y hacer selección? Había pensado dejarlos crecer unas 3 semanas maximo, que no superen los 40cm y hacerles el lollillopping
Sabéis por el color y las manchas que deficiencia pueden tener ?
ThanksWeek 1
Leaves. Color - Yellow
3y ago
1
1
Solved
NewOfficialDrillInvaders
Not sure what it isGot some problem with one plant her leafs looks yellowing and got dark spotsLeaves. Color - Yellow
2y ago
2
Solved
Juicydave
Hey guys,
I just wanna ask, all girls except one looking bright green almost a bit yellow.
And only one is dark green.
Someone has experience with this strain?
I read about a yellow albino but I think it isn‘t that yellow :)
Would be really thankful for your ideas.
Thanks guyWeek 2
Leaves. Color - Yellow
7y ago
1
2
Solved
hannabis420
yellow leaves do i cutrecently checked pH of soil is 6.5, has been hot as hell here with feel like temps up to 106, should I cut all the yellow leaves off? I have already cut a few from the bottom a few days agoLeaves. Color - Yellow
Setup. Strain - Autoflowering
Setup. Outdoor
5y ago
1
1
Solved
CropsNjunk
One of my plants fans are yellowing, spotting, pretty badly. The medium PH is 6.5, same as my other plants, but she just doesn’t seem to be liking it. I’m using nutrients, but not heavily. About a quarter teaspoon per gallon of the flora trio. It’s the mid fans not bottom or new.Week 6
Leaves. Color - Yellow
8y ago
1
4
Solved
Dillsnills
Advice on what's going on with this plant some yellow and brown on the leavesLooking for help to diagnose what's going on w this plant,did a mini flush ppm runoff 610 intake 345ppm, wk 7 flowering Girl Scout Cookie Auto GardenOfGreen, should I do a nute feeding next,FF chaching,big bud? Ph6.5. Advice input opinions greatly appreciated.Leaves. Color - Yellow
Leaves. Color - Dark-brown
Feeding. Deficiences
5y ago
1
1
Solved
RecreationalRoots
Nute Deficiency or New Leaves?!Thoughts if this yellowing may be nute deficiency? Or are these just new leaves and I am concerned about nothing and I’m babying them since it’s my 1st grow?
Both plants are about to be 2 weeks post sprout. Both are in 5 gallon fabric pots with layered soil (FFHF on top of FFOF)Leaves. Color - Yellow
Feeding. Deficiences
5y ago
2
2
Solved
Wuesten
Papaya - looks thirsty and starts yellowing on lower half :'-(My very well trained photo Papaya (Nirvana - Citric x Ice) is significantly decreasing in happiness since yesterday. She looks thirsty but the fabric pot is still heavy and moist (watered 4 days ago), also the leaves on lower half turned yellow today. Too much / little of what?Leaves. Color - Yellow
3y ago
6
9
Solved
The_Stoned_Samurai
EC too high and leaf yellowEC 1.45 and some yellow leaf… I adjusted the soup by adding water to it and the new leaves seem to be pretty ok. Otherwise, all other parameters are good. It’s odd bc I followed instructions of the brand (Platinium Hydroponics) and the EC lvl is still kinda high. Suggestions?Leaves. Color - Yellow
Feeding. Automatic systems
2y ago
1
1
Solved
bobo66
yellow spots on upper leaves, towards the end of flowering, I grow in a Coco ,flowering 8/10This is my second attempt at cocus
I work with Plagron nutrient solutions(Coco Nutrient)
I follow the table, there were no problems on my first try.. should i stop nutrients? I always mix the water in a bucket, so I can't spoil it either, because most of the plants are healthy, ph 5.5 is always between 5-7!Leaves. Edges burnt
Leaves. Color - Yellow
Leaves. Color - Mottling
3y ago
6
7
Solved
YellahJelle
already yellow leavesIsnt this too early at week 4 of flower? Advertised as 6 weeks flower cycle thoughWeek 11
Leaves. Color - Yellow
5y ago
2
Solved
Deli_Weed
Hojas con manchas amarillas y puntas quemadasNote estas manchas amarillas en las hojas de mi og kush auto, esta en sus últimas semanas de floración, sustrato coco y perlita, que creen que sea? Y que debería hacer? Por lo que leí, se debe a deficiencia de magnesio y que es común en las últimas semanas, pero no estoy seguro🤔Leaves. Edges burnt
Leaves. Color - Yellow
6y ago
4
3
Solved
m1kax
leaves brown stainsis my 1st time growing weed.
my plants start get this brown stains on top leaves 2 weeks ago;
i check ph was 5.95; so i think this could be calcium, because internet say they cant absorb calcium;
i have high humidity before the stains appear like 80% but was only 4 or 5 days.Leaves. Color - Yellow
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
2y ago
2
4