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Back to Grow Questions
Dbrito3063
started grow question 5y ago
What is Themis leaf issue
Open
Leaves. Color · Black or grey
likes
Answer
Hashy
answered grow question 5y ago
You have fed to much nitrogen and got nitrogen toxicity.
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Complain
Cannabis_King
answered grow question 5y ago
Might be an infestation of thrips looks very similar
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Complain
Similar Grow Questions
Solved
Magic43562
Black growth seedling
One of my 10 day old purple punch seedlings has some black stuff on its new growth in the center. My older PP had it too and she’s big now and doesn’t have it anymore.Still is this anything to be concerned about?
Leaves. Color · Black or grey
6y ago
4
Solved
Ner0z
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
Week 2
Leaves. Color · Black or grey
6y ago
2
3
Solved
kem0s
what is this?
1 plant has grey interveinal leaf spots and grey wilted edges. never seen this before. its only on top of the plant. my temps dropped to 17°C last night. light intensity is about 500ppfd. im guessing that it is a ph issue or overfeeding the other 2 plants are fine
Leaves. Twisted
Leaves. Color · Black or grey
10mo ago
4
7
Solved
EvilGrower
Leaf discoloration - light and dark splotches
Hello! Any ideas as to why my leaves have splotches of discoloration? 😅 It appears that one leaf has light 💀 patches while the other leaf has dark. 👹 Thanks for your time! 🙌
Week 2
Leaves. Color · Yellow
Leaves. Color · Black or grey
6y ago
2
3
Solved
einamio
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🙏
Week 5
Leaves. Tips · Burnt
Leaves. Color · Dark-brown
Leaves. Color · Black or grey
2y ago
3
5
Solved
Kaiserschmarn
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
6y ago
2
3
Solved
Apolloo
Gray spot
Hello everyone! Some of my leaves have small gray spots on them, like the ones in the picture. What could be causing this?
Leaves. Color · Black or grey
5y ago
1
Solved
m1kax
Leaves with Spots brown/yellow.
this is my 1st grow, they are autoflower and this is day 60. ec from last runoff was ok. ph was 5.95 maybe is too low, but im already give him high ph they start getting this stains week ago i change my light recently, and i got high humidity last week like 80%.
Leaves. Color · Black or grey
3y ago
1
1
Solved
Smokeyboar
leaf problem what would it be cheers
Leaf problem
Leaves. Color · Black or grey
6y ago
1
2
Solved
m1kax
leaves brown stains
is 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
3y ago
2
4
Solved
The_Wanderer
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
10mo ago
4
3
Solved
Clutch
What leaf problem am I dealing with?
Fan leaves are turning black from the inside to outside. What's going on here?
Leaves. Color · Black or grey
5y ago
3
4
Solved
420throwaw4y
Is this sign of nutrient lockout? I have moved her to a bigger pot now, that said I’m worried I’ve been testing my PH wrong, I uploaded a pic (day 26) is she starving? Up til now I haven’t fed her anything but water
Week 5
Leaves. Color · Black or grey
7y ago
2
2
Solved
aRecreationalist
Seeing some top bud leaf discoloration
Starting to see small dark/black discolorations on the leaves. Since I don't know the genetics, I can't tell if it's prone to dark leaves. Could it be signs of anything else? Note: Started watering only using TopMax and ActiVera because of some possible Nitrogen toxicity
Week 6
Leaves. Color · Dark-purple
Leaves. Color · Black or grey
6y ago
1
1
Solved
Filiaes
Grey leaf tips
Booth plants are showing some kinds of burn and I am not sure if it is nutrient burn or light burn or if there is something missing. Looks a bit like MG deficite but shouldn't the plant take that from the soil in that state and age?
Week 2
Leaves. Color · Yellow
Leaves. Color · Black or grey
Feeding. Deficiencies
3y ago
5
5
Solved
Cookie_monster12
What is this caused by? Spreading through mid leaves quite fast
Week 8
Leaves. Color · Black or grey
5y ago
4
4
Solved
ChefDan420
Today I noticed 🍄mushrooms popping up with GiSCele. Does that matter? Are they🍄poisonous to girlies? Don’t bother me,but I dunno🤔. I recently started using 🦇 bat guano and have a feeling that’s what encouraged- kinda cool if I see Smurfette sunbathing on 👙🆒👍🏼
Week 20
Leaves. Color · Black or grey
8y ago
1
2
Solved
HomeGrowBro
Late flowering damaged leaves
Hi. Should I be worried? What action must I take. I dont want to spoil this grow. Thanks
Week 15
Leaves. Color · Black or grey
5y ago
1
3
Solved
ButtersStotch
Leaf Deficiency
What deficiency do you think this is?
Week 10
Leaves. Color · Black or grey
6y ago
4
4
Solved
GreenBean
leaf discolouration
edges of leaves are a blackish tint
Week 20
Leaves. Edges burnt
Leaves. Color · Black or grey
7y ago
1