The Grow Awards 2026 π 
Help. Yellowing leaves
Kirsty220started grow question 4y ago
Help one of my plants aren't happy with yellowing tips any help be appreciated many thanks x
Open
Leaves. Color - Yellow
likes
Answer
Chow_13answered grow question 4y ago
Your either lacking magnesium or have excess phosphorus/potassium. So either cut back on the bloom nutrients or add a cal-mag supplement to her diet.
likes
Complain
Similar Grow Questions
Solved
Jmenzel30
Rust Colored Spots on Leaves in FlowerIβm in flower with my Sour Lemon Hash Poison and things were going great until this last weekend. I developed a bunch of fungus gnats on Sunday, and today my leaves are looking like this. How can I safely treat this in flower?Leaves. Curl down
Leaves. Color - Yellow
4y ago
1
1
Solved
Straightcurve6
Yellowing tops 7th week auto super lemon hazeI have a 7 week old super lemon haze auto and the leaves are yellowing pretty sever from the middle of leaves on some of my tops and stunted growth, any ideas? Could it be lockout it's growing in Coco and is my first grow. Thanks in advance for any help.Leaves. Color - Yellow
6y ago
1
1
Solved
JoshuaTreez
Is this light burn?All my leaf tips are going yellow, even on the bud leaves. It does seem to be a bit worse towards the top of the plant. Is this light burn? I am using 2x 1000w philzon LEDs in a 3.5'x3.5' Tent and I had them at 10/10 brightness. I just reduced to 8/10. Thanks in advanceLeaves. Color - Yellow
4y ago
1
3
Solved
Faegrows
Yellow leaf tipsAnyone know why my plant is showing yellow tips and some random yellow spots? They seem to appear all over the plant.Week 14
Leaves. Color - Yellow
5y ago
3
3
Solved
Brock2010
I DONT KNOW WHAT MY PLANT IS DOING!!HELPLeaves. Curl down
Leaves. Color - Yellow
Plant. Stem - Red or purple
2y ago
8
5
Solved
Misanthrope
Not Nutrient BurnWell I'm stumped...ppm 600, pH 5.9...it certainly looks like nutrient burn but it can't be, tips yellow then darken and curl and get crispy. 3 days between pics in question and in diary. My only guess is that I upgraded from knockoff 100W LED to Mars Hydro 150W. Any ideas?3y ago
1
5
Solved
4EverGreen
Losing vigor and yellowingSorry I donβt 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 isnβt, all plants have lost vigor, are growing slowly and are yellowing.Leaves. Color - Yellow
1y ago
5
5
Solved
Stolas2
Yellowing and crisping leavesHi
Really need some help with pics below leaves are yellowing snd crisping. Not sure if it nute deficiency.Leaves. Edges burnt
Leaves. Color - Yellow
4y ago
1
Solved
Dahliaking
Organic grow, yellow leaves, autoflowerFirst ever grow. I'm in my 5th week of autoflower, organic grow. Using the bomb paonia soil, raging kush light and boogie brew tea and filter to water. Temps are steady around 86. Started noticing yellowing on bottom leaves. I'm pretty sure it's from under watering? any feedback?Leaves. Color - Yellow
5y ago
3
4
Solved
FullFuzzy
Upward curling of leavesOne of my plants has started to have it's lower leaves curl upwards & started to go a yellow tint that's harder to see in my images. Yellow tint is starting higher up as well I think, but the curling is only on the low leaves. Is it nutrient defficiency, heat stress, wind stress?6y ago
1
2
Solved
Machamp
First time grower: Should i defoliate? If yes, where should i cut it? I fear to do something bad.How to defoliate/should i defoliate my Wedding Cake Auto and Godzilla cookies auto? Some leafs of my Wedding Cake auto are getting yellowish, as you can see in the picture
My Wedding Cake Auto is too close to the LED (she is too tall). What should i do?10mo ago
20
7
Solved
Kraze
Leaf tips turning yellowish brownishHi all, I have a issue with my plant, I recently changed from soil to Coco and now I am 1 months in and my plants has all its tips brownish yellow, I suspected it was overwatering or Potassium deficiency but I Am not sure about it, anyone has an idea? ThanksLeaves. Curl up
Leaves. Color - Yellow
Leaves. Color - Pale
3y ago
1
1
Solved
RASKAL79
Having issues w. my 1st grow of Sucker Punch Auto.... not sure what the deficiency is?
Use GENERAL Hydroponics nutrients FloraLeaves. Color - Yellow
Plant. Wilting
6y ago
3
Solved
GeezandDraht
CalMag?Please Help:
Is this CalMag deficiency?
Age: 21 days
Transplant into this pot: 4 days ago
Watered in with 1/4 of the recommended feeding + 0.25 ml CalMag per Liter (each plant got 3 liters).
PH: checked the substrate: 6.5
watered/fed with 6.3 PH
First feed at 14 daysLeaves. Color - Yellow
6mo ago
3
3
