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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
likes
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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Complain
Selected By The Grower
Similar Grow Questions
Solved
ScottShelby
Weird spots!
HELP me out please , what the plant is trying to tell>>?, I'm using CFL lights, watering with 300ppm and 6 pH
Week 3
Leaves. Color · Black or grey
5y ago
2
2
Solved
stefu
Hello, do the leaves of the plants get darker if you give more nutrients before they show signs of over-fertilization? I use Canna aqua. I know that if I give too much nitrogen, the plants get darker. But is it the same with too high EC?
Leaves. Color · Black or grey
6y ago
1
2
Solved
PurpGod
Nitrogen toxicity? Kind soil
How to treat nitrogen toxicity in roots organic soil with kind living soil in bottom 1/3 . only watered 6.0 purified water.. week 3-4 flower
Leaves. Curl down
Leaves. Color · Black or grey
Other. General questions
6y ago
2
3
Solved
ZhugeTsuki
Still cant figure out what's going on with this plant. EC was over 2 for a couple of days but has since been taken care of, last reading was .83.
Is this a deficiency or some other kind of issue? Some have suggested a p or k deficiency, but I feed Jack's 20-10-20 peat-lite so I would be very surprised if it was a P problem, and the problem seems to be all over the leaves, but a lot of them start from the base of the leaf.
Leaves. Color · Black or grey
Other. Mold
6y ago
3
Solved
Fro5ty
Necrosis at upper leafs of 1 plant in RDWC
Are the leafs dying? Or am i having a deficiency? Hangover NYE. slept till monday. pH dropped to 5.0 by then. Changed water. 2 days EC 0.8 to 0.6. pH stable 6.3, is weird, caus it has been dropping continuously. Lower leafs look fine. It's also the ripest girl fyi. Problem worsen
Leaves. Color · Black or grey
4y ago
1
3
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
Royalgorillaxx
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
Week 1
Leaves. Curl down
Leaves. Color · Yellow
Leaves. Color · Black or grey
6y ago
3
4
Solved
growbie
What deficiency it can be?
what deficiency it can be? its start from upper fun leaves
Leaves. Color · Black or grey
6y ago
2
2
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
Pifferson
Listless plant
What would cause this specific plant to look so droopy and sad? Had to cut out some totally dead growth. I’m at week 7, is it too late to help it?
Week 7
Leaves. Color · Black or grey
5y ago
1
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
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
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
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
Zark002
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?
Week 5
Leaves. Color · Black or grey
5y ago
3
Solved
NicoKh
bad leaves
Some leaves in a bad looking don't know why, i think is overfeed or smthn what do you think? them are on the middle of the 5th week of flowering
Week 9
Leaves. Color · Yellow
Leaves. Color · Black or grey
5y ago
2
2
Solved
Terp_Djiny
What could this be?
I have no idea what this could be! It came in one night and affected several sun sails. Pnly small black dots. The environment has not changed. Continuous temperatures and a relative humidity of 40%
Week 21
Leaves. Color · Black or grey
6y ago
2
2
Solved
urbanbud
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 🙏
Week 14
Leaves. Color · Dark-brown
Leaves. Color · Black or grey
Feeding. Deficiencies
6y ago
2
4
Solved
Smokeyboar
If a plant has cal and mag and phosphorus def how do you correct these
If a plant has cal and mag and phosphorus def how do you correct these
Leaves. Color · Black or grey
6y ago
1
3
Solved
Aragon
Grey spots day after rigged up the humidifier
I've hooked up the humidifier 2 days ago, yesterday i looked into the tent and noticed that the 2 healthy girls got weird grey spots all over, the RH was at only 40%, ever since i noticed the girls sick i turned off and cleaned out the humidifier with alcohol, anyidea whats this?
Week 2
Leaves. Color · Black or grey
5y ago
1
5