The Grow Awards 2026 🏆

Back to Grow Questions

Nutrient burn

Mitchstarted grow question 5y ago

How can I fix a nutrient burn on a seedling?

Mitch

Solved

Leaves. Color - Black or grey

likes

smoke24answered grow question 5y ago

Seedlings don't need any nutrients for a good 12 days at least. Stop giving nutrients, water when dry, it will grow out of it.

1 like

Complain

Selected By The Grower

Similar Grow Questions

Solved

Hello guys! A have a big problem Hi there. Today while checking my lovely flowers i found this plant woth this kind of leaf. It has more than one leaf like this the same plant. Anyone has any idea

Leaves. Color - Black or grey

5y ago

2

2

Solved

Weed doctors to the rescue Day 44, fb auto, my happy girl developed those dark spots at the top... Is this a Calmag deficiency? Although I'm giving her calmag every feeding. I think there are also first burnt tips. I'm about to water her tonight, what should or should not give her? Thanks for your inputs🙏

Leaves. Tips - Burnt

Leaves. Color - Dark-brown

Leaves. Color - Black or grey

1y ago

3

5

Solved

dark discolouration developing in flowering wk 3 howdy growbuds, noticing the pictured discolouration. hope someone w more experience/knowledge might recognise what's happening to my gals before it develops. advice/opinions welcome on if maybe nut burn/def, temp or ??? a heap more detail in entries to help diagnose. cheerz 🙏

Leaves. Color - Dark-brown

Leaves. Color - Black or grey

Feeding. Deficiences

5y ago

2

4

Solved

Leaves are turning into dark green with a plastic-like texture I have 3 ladies in my tent. While the others looking healthy, one of them has a darker green tone with a texture like plastic and shiny. Everything is the same (fertilizer ratio, coco medium), however the one on the picture has a problem. What might be the problem folks? 😩

Leaves. Curl down

Leaves. Color - Black or grey

1y ago

3

2

Solved

Leaf color. Day 14.The coloration on my first leaves is worrying me. First grow. I really don't want to stunt her. G&B potting soil, filtered soft water, Myco+ in my water, 100w AC infinity Ionboard.

Leaves. Color - Black or grey

3y ago

3

1

Solved

what is this ?Ist alles okay mit den Pflanzen ?

Leaves. Color - Black or grey

5y ago

2

3

Solved

Hey brothers and sisters ! This is my first grow so IM little out of this but still to get some good results with latte yield (Im hoping) So my setup is -4quick ones 2x190w led panels from dutch passion (so they should ne pretty high quality i hope ! I would apreciate All help

Leaves. Color - Black or grey

7y ago

1

Solved

These three girls are all wilting and/or barely growing. I'd say over-watering except I've only been giving maybe a quart then waiting till the soil dries a little bit. Not too much tho. Could it be a nutrient problem already?

Leaves. Wilting

Leaves. Color - Black or grey

6y ago

4

6

Solved

Weird coloured leaves The leaves are yellow a bit on the outside and just today noticed that it looks kind of black too. Anyone know if this is because of a certain deficiency?

Leaves. Color - Black or grey

5y ago

5

5

Solved

1st grow need help Don't know what went wrong.as i said first grow. Leafs are curling down and they have a dark green color on the tips.. I can see a little yellow also.. Should i worry?what can i so to fix it

Leaves. Curl down

Leaves. Color - Yellow

Leaves. Color - Black or grey

5y ago

3

4

Solved

Problem with plants in the 3rd week of vegetation.Hello everyone, I am new grower, in the 3rd week, I started having issues with the leaves. Does anyone have a diagnosis for this? I am using I am using Advanced Nutrients (Coco Grow A and B, B-52, Voodoo Juice) Coco Soil Temp: ~26 C Rh: 60-65% Feminized seeds Thanks :D

Leaves. Tips - Burnt

Leaves. Curl down

Leaves. Color - Black or grey

1y ago

1

Solved

Fungus or Mold When Drying?Drying for about three days in bathroom with rh approx 55% and temp 70 f. Seeing blackening of the sugar leaves, is this a fungus or mold? Any cure?

Leaves. Color - Black or grey

4y ago

6

5

Solved

Deadly Leaves Start Week 9 … is this a Problem or normal?

Leaves. Color - Black or grey

1y ago

1

Solved

Cold or hot extraction for antioxidants?What preserves anthocyanins in our cannabis leaves better? If we want the antioxidant properties so we can use them for our benefit, which is better? Cold gentle extraction or use of heat? A traditional african practice centuries old makes tea from leaves to treat certain illness

Leaves. Color - Black or grey

19h ago

4

3

Solved

Yellow leaves with grey/dark outline I have some yellow leaves with grey/dark outline. Do you know the cause? Could be the humidity level too low? or K deficiency?! I'm not so sure about the last one. Help me guys please.

Leaves. Color - Yellow

Leaves. Color - Black or grey

5y ago

2

3

Solved

Leaves Shall i cut them leaves?

Leaves. Color - Black or grey

Leaves. Other

5y ago

2

2

Solved

Black Leaf Does anyone know what's this? I just transplanted it, yesterday, and one of the leaves is getting black and smaller.

Leaves. Color - Black or grey

5y ago

3

2

Solved

Flower development I'm starting my week 3 of flower I'm starting to notice inside of my canopy some of my leaves in Bud sites are getting very wilted and going black could this be the start of a mold or is this a natural thing should I remove anything that looks like this ? Also my humidity is 70

Leaves. Color - Black or grey

5y ago

1

1

Solved

herbalistssword

Grey leaves Noticed some leaves getting a brown grey colour. Any idea what this is? Seems to only affect leaves on one branch

Leaves. Color - Black or grey

5y ago

1

Solved

Flowering hello Farmers! Is this normal? What is the reason and what is the solution? Tnx

Leaves. Color - Black or grey

1y ago

2

3