Back to Grow Questions

Black Stains on leaves...

Doudou3Dstarted grow question 5y ago

Anyones know what is this black Stains on m'y leaves ?

Doudou3D

Doudou3D

Doudou3D

Doudou3D

Open

Leaves. Color - Black or grey

likes

Answer

The8thChevronanswered grow question 5y ago

If you're in flower phase, it's like a P deficiency. Other possibility is critters or your leaves getting wet and burning. Check your pH and look carefully for pests. Otherwise make sure your leaves dont get wet and that you have enough phosphorus if you're in bloom. Cheers!

1 like

Complain

Similar Grow Questions

Solved

My dwarves are sick, issue with leaves Issues with my dwarves leaves, can you help me to identify them ?

Leaves. Color - Black or grey

4y ago

4

10

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

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

Please see the 2 photos marked in the diary. Is this a classic PK burn? Did a feed with no MegaCrop, no cal-mag, just PK boost at diluted dosage. The coppering and yellowing has come sudden. Leaves are crispy where burnt. I hear its easy to burn with PK boost. Did I do that?

Leaves. Color - Black or grey

6y ago

5

2

Solved

Black discolouration on leaves Okay so the problems with the black spots continue only on one plant. I tried reducing nitrogen and increased calmag to 4ml/g. I defoliated the affected leaves and sprayed with baking soda mix. 3 days later they're appearing again. If I don't get this fixed soon im gonna lose her

Leaves. Color - Black or grey

5y ago

2

3

Solved

Late flowering damaged leaves Hi. Should I be worried? What action must I take. I dont want to spoil this grow. Thanks

Leaves. Color - Black or grey

4y ago

1

3

Solved

Coco grow problem Hi Guys! I have issue in my grow. Girls are in 9th week from seed, 2nd week flowering. Coco substrat pH 5.8 EC 1.0-1.1 temp 23/24 humi 50%. Water EC 0.1 + calmag up to 0.2-0.3, Coco a/b up to above value 1.1-1.2/ph5,8. I believe that are deficiencies by too low ph for bloom stage

Leaves. Color - Black or grey

5y ago

1

2

Solved

My seedling doesn't look so good.This is my first coco grow so could be possible that I made a mistake. The other three seedlings are super healthy but this one has this weird thing with it's leaves. Somebody seen this before? I gave them some root juice and fertilizer before transplanting with ph between 5,5-6.

Leaves. Color - Black or grey

5y ago

2

3

Solved

LEAFS DYING The edges of the leaves are dry and black. Every single point of the leaf is burnt(black) or yellow...even some edges on the leafs of the coal are burnt. I guess it’s overfert...but I just flushed. Is it Ph? I haven’t checked in awhile. Is it they ready to be cut down?

Leaves. Color - Black or grey

6y ago

1

2

Solved

Leaf colour black

Leaves. Color - Black or grey

2y ago

8

4

Solved

which deficiency?what deficiency does this look like? (specifically the plant with the yellow tips,blackish leaves,and brown spots on lower leaves) ph is around 5.9 but also i know my meter is probably not accurate. i thought i was underfeeding if anything,did have root rot.

Leaves. Color - Black or grey

5y ago

4

3

Solved

Dark spot on the leaves of my seedling Hello, i have a weird dark spot on my seedlings idk what it is and if i should be worried. I know on these genetics the leaves can turn dark purple but I don't think it would be happening this early. I fed them nutes for the first time yesterday and today this dark spot appeared.

Leaves. Color - Black or grey

5y ago

2

2

Solved

Phosphorus deficiency ?I'm not sure but I think it's a Phosphorus deficiency, right ? And if it is, how can I fix that ? just adding more alga bloom ?

Leaves. Color - Pale

Leaves. Color - Dark-purple

Leaves. Color - Black or grey

3y ago

4

3

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

Solved

Black spots under leaves What are these black spots? I recently released some ladybugs in my grow room and saw them crawling on the plant this week, so is this possibly from them or from something else?

Leaves. Color - Black or grey

3y ago

3

2

Solved

strangely growing leaves.hi guys, after doing a defoliation and someone ties, some smaller branches from the bottom started to present this problem where the new growth should come, do you know what it could be and how to fix it?

Leaves. Color - Black or grey

4y ago

3

Solved

What happened to the leaves?What happened to the leaves? Was it caused by too much water? (Coco ph5.8)

Leaves. Color - Black or grey

4y ago

4

3

Solved

What kind of Bug?Hello, i have these grey/silver spots on a leaves. I also discovery 2mm long and thin white bugs without wings mostly on top of leaves. But i can not determine what kind of Bug it is. Any ideas?

Leaves. Color - Black or grey

4y ago

3

3

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

Blackening leaves on 2 week old seedling.Any ideas what has caused the blackening on the leaves? More effects of the overwatering? Hope it's not a lost cause but I'm losing hope.

Leaves. Color - Black or grey

6y ago

2

1