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Back to Grow Questions
Grey leaves
herbalistssword
started grow question 6y ago
Noticed some leaves getting a brown grey colour. Any idea what this is? Seems to only affect leaves on one branch
Solved
Week 19
Leaves. Color · Black or grey
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MangoDudu
answered grow question 6y ago
I think calcium deficiency next to the clorosis the leaf will start necrosis if is calcium def ✌️🏽
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Selected By The Grower
Similar Grow Questions
Solved
Mekster
Week 2 flower.Buds turning black
Buds and leaves under are turning black, any advice? Something to worry about?
Week 6
Buds. Other
Leaves. Color · Black or grey
3y ago
3
2
Solved
Jovkimm
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
Week 6
Leaves. Color · Black or grey
7y ago
1
Solved
Chillymann
Black poison is starting to show her colors.What can i do to speed up or enhance this process.See photos.This is a outdoor grow .
Week 16
Leaves. Color · Black or grey
6y ago
1
Solved
Grnhead
In the 3rd photo in week 12 there is spotting on the leaves. Does anyone have an idea of what that is from? A deficiency? I had trouble getting the nutrients right and that showed up first after I flushed for a few days.
Week 12
Leaves. Color · Black or grey
7y ago
1
2
Solved
organigrower69
Discoloration
Two of my leaves have serious discoloration coming from the middle of the leaf
Leaves. Color · Black or grey
5y ago
2
Solved
Smokeyboar
leaf problem what would it be cheers
Leaf problem
Leaves. Color · Black or grey
6y ago
1
2
Solved
Glen1818
Nutrient Burn ?
Hello, can some one Tell me whats this is ? only one of four plants had this problems im watering when its dry , 2.8-3.3L
Week 9
Leaves. Color · Black or grey
4y ago
3
4
Solved
U2malone
Bud leaves turned black
Top leaves turned brown overnight, That day I did come home to a disturbing temp off 31oC . It’s the black Mini leaves in buds that are worrying me more. lights came on accidentally for two hours so gave her 16hrs dark and back to 12/12 This may have contributed.
Week 18
Leaves. Color · Black or grey
6y ago
1
Solved
The_Wanderer
Help! Black Weed!
Help! Almost ready to harvest on the winter solstice. Black weed
Leaves. Color · Black or grey
8mo ago
9
8
Solved
FiFrElOt
Demande de diagnostic
Hello, I'm currently in week 7, my problem has been going on since week 5 and I can't identify it... Has anyone ever had a problem like this?
Leaves. Color · Dark-brown
Leaves. Color · Black or grey
Feeding. Deficiencies
5y ago
2
2
Solved
Nachtjasmin
Schwarze Spitzen und Flecken nach Neemöl-/Kaliseifenbehandlung in der Dunkelphase. Schimmel? Dran lassen oder abschneiden? Bitte um Hilfe!
November 3: At the beginning of the dark phase, I applied a mix of 200ml water with 2ml neem oil, a splash of rapeseed oil, and 4ml potassium soap to the plant. The reason for this is an infestation of whiteflies. I didn't apply everything. Today I see black spots. Is that mold?
Week 3
Leaves. Color · Black or grey
Other. Mold
2y ago
4
6
Solved
einamio
First time DWC, day 70, 3 weeks in flower. Nasty rusty spots appear on lower leaves. Is this CalMag or else? Please help understand and fix, thank you :)
I'm using TA Tripart, current EC is 1.6 - ph 5.5-6.5. Everything was smooth until week 10. Two weeks ago I started adding Plagron Power Buds and Green Sensation. Yesterday added CalMag to see if it helps, but it doesnt seem to... She drinks a lot, ph mostly goes down, EC static
Week 11
Leaves. Color · Dark-brown
Leaves. Color · Black or grey
Leaves. Other
1y ago
8
6
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
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
Indica_Jones
what is this ?
Is everything okay with the plants?
Leaves. Color · Black or grey
6y ago
2
3
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
igrowtomatoes
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.
Week 4
Leaves. Color · Black or grey
6y ago
4
3
Solved
PakaloloTingz
Grey spots on leaves and yellowing
The leaves are looking light green to yelloe and there are these dark edges on the leaves are showing up.. Has anyone experienced this before? It was happening a bit before transplant but now it seems to be getting worse. I just transplanted within 24hrs... Stress? Overwatering?
Week 8
Leaves. Color · Black or grey
6y ago
1
1
Solved
OneBakedWalrus
Black tips
One more. What's up here? Its happening to 2 plants but I've no idea why. No changes no stresses.looks like a nutrient problem. But if it is what is it and how do I fix it? I dont usually feed but if it will help ill get something.
Leaves. Color · Black or grey
6y ago
1
1
Solved
JarJarGreens
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.
Week 1
Leaves. Color · Black or grey
4y ago
3
1