Vote Now 🏆 for the Grow Awards 2025!

Chat

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

Recommended

Recommended

Grow QuestionsYellow leaves.

Yellow leaves.

Canna96started grow question 5 years ago

7 week old auto leaves turning yellow. Not sure if it's a deficiency or light burn? I am feeding cal-mag, maxibloom, and koolbloom. My light is a mars hydro sp250, and I am down to 11 inches of space from the tallest part of the auto to the LED. Any help is appreciated!

Canna96

Canna96

Open

Leaves. Color - Yellow

likes

Answer

Uchibafarmsanswered grow question 4 years ago

That’s not light or nutrient burn. Maybe phosphorus deficiency?

2 likes

Complain

DoDrugs420answered grow question 5 years ago

Take a look over here, seems like micronutrient burn, too much calmag probably. https://2fast4buds.com/news/what-is-overfeeding-and-how-to-fix-it

9 likes

Complain

Similar Grow Questions

Solved

Yellow spots on leaves.Can some please help with what’s the problem with the leaves on my plants? They have lots of yellow spots

Leaves. Color - Yellow

4 years ago

3

3

Solved

Why are my leaves turning yellow Why are my leaves turning yellow? pH 6.5 before watering and similar from run off. I saw some Thrips could they be the reason?

Leaves. Color - Yellow

4 years ago

2

Solved

Como evitar el amarillamiento de las hojas En los 4 cultivos desde que empece, casi siempre tengo este mismo problema. A partir de la 3-4 semana, las hojas empiezan a amarillear desde abajo y va subiendo por la planta. Por lo que he leído, parece una deficiencia de N, pero nunca consigo arreglarla. Consejos?HELP PLEASE!😇

Leaves. Color - Yellow

4 years ago

1

1

Solved

Yellowing leaves What kind of deficiency is this? I can get a sack of coffeeground and add it if nitrogen is the cause

Leaves. Edges burnt

Leaves. Tips - Burnt

Leaves. Color - Yellow

4 years ago

6

Solved

Potassium deficiency?My Auto 1 is showing some yellowing and brown tips on the leafs .. Can this be potassium deficiency ?

Leaves. Edges burnt

Leaves. Color - Yellow

4 years ago

2

2

Solved

Is this a deficiency or some form of toxicity (autoflo/cfl 125w/ led 300w)Hello guys i'm a new grower, I have 2 plants one Purple Queen Auto and one Northern Lights Auto. On the lowest 2 leaves of the purple queen there is this thing (picture) It is only there on one plant only and they have the same water each time (1L) Do anyone know what i'm facing

Leaves. Tips - Burnt

Leaves. Color - Yellow

Feeding. Deficiences

4 years ago

1

1

Solved

Problems on leaves Over watering, nutrient defiency or? Backup info: I basicly nute burnt my plants 2 weeks ago, then I changed my growing medium (market soil) to another one with lower Nitrogen & Pottasium values and flushed to whole soil (15l soil) with around 20l pH balanced water. whats up now?

Leaves. Edges burnt

Leaves. Color - Yellow

Feeding. Deficiences

4 years ago

2

Solved

Will flushing save me?Yellowing getting bad, my ph with my tester straight in the soil was around 7, just checked the bottom and it's at about 5, if I flush can I fix this?

Leaves. Color - Yellow

4 years ago

1

1

Solved

Yellow leaves with dark spots Old leaves going yellow with black spots that fall off with the slightest touch.. They are the lower growth that hasnt really been exposed to much light. Any ideas what could this be and how to fix it? A bit worried about losing 3 months work 😑 Thanks in advance!

Leaves. Color - Yellow

4 years ago

1

2

Solved

Help with Symptoms What kind of deficiency or excess is this? I couldn´t find anything that matched it. It was from a bottom leaf that wasn´t getting much light and was pretty close to the soil. TIA!

Leaves. Color - Yellow

4 years ago

2

1

Solved

GranddaddyTurtle

I want color green more 22days but the leaves not dark green ,how to fix it better Thank you

Leaves. Color - Yellow

4 years ago

4

2

Solved

Leaf Yellowing?What is the yellowing in the last pic? The soil is top 20% Atami Cocos, bottom 80% store bought organic super soil. Watering tap water (EC 0.284/142 ppm), pH'd down from 7.9 to 6.5 with citric acid... I think that's probably the problem? Any advice for the high pH tap water?

Leaves. Color - Yellow

4 years ago

2

Solved

GranddaddyTurtle

Yellow again How to fix it

Leaves. Color - Yellow

4 years ago

1

1

Solved

Pale and patchy seedlings?What’s wrong with my seedling? Pale and white patches. 2 days from germ in coco, been feeding 1ml canna a&b per litre. Then gave cal mag only but no improvement. 2 other seedlings are ok but diff strains.

Leaves. Color - Yellow

Leaves. Color - Pale

4 years ago

2

2

Solved

Yellow stripe on leaf appeared 2 days ago is it an issue?Is the yellow stripe in my 8/26 picture anything I should be concerned about? Don't want to botch my first real grow

Leaves. Color - Yellow

4 years ago

2

Solved

help! my plant is turning pale. the green color is losing.the green color is losing. some leaves burn from the tip to the stem of the leaf. Excess fertilizers (because I fertilized the soil) or deficiencies due to few nutrients? I also thought that it can burn with nearby lights, but the ones that burn are far away

Leaves. Tips - Burnt

Leaves. Color - Yellow

4 years ago

5

2

Solved

Greenfingers666

problems with yellow outter rim round the leaves Just need to confirm my suspicions NITROGEN lack of?yeah/neih

Leaves. Color - Yellow

4 years ago

3

Solved

Yellowing Lower Leaves Seeing some yellowing on the lower leaves. Any ideas? Presuming my PH is incorrect and she’s not intaking calc/mag correctly.

Leaves. Color - Yellow

4 years ago

1

Solved

DRunKenMONkey271

Yellow and burnt leaves Yellow on one side and pretty much green on the other. Why? Lol I'm light on the nutes. I dont think I've been giving to much. Maybe not enough? I hope it makes it.

Leaves. Tips - Burnt

Leaves. Color - Yellow

Leaves. Color - Pale

4 years ago

3

3

Solved

Nute defficient?Are the leaves lookinkg okay? I believe that the newest fan leaves and branch leaves appear a bit bright in the middle. Is that nute defficient? And does she look healthy furthermore?

Leaves. Color - Yellow

4 years ago

1

2