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Back to Grow Questions
Grey leaves
herbalistssword
started grow question 5y 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 5y 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
Pav28
Light distance and power
I have lumatec Zeus pro 600w 2.9 Plan is to have it 50cm away 25% power 1st week veg 50% power rest of veg 75% power for 3 weeks of flower 100% power till the girls are finished In the 1st grow I’ve made mistake in the light management. Am I correct in my thinking this time?
Week 1
Leaves. Color - Black or grey
4y ago
1
4
Solved
Dutchhobby
Black spots and light green leafs
Anybody knows what the black spot in the new leaf grow in center is.never seen it before.also very light green leafs with 2.i use light mix and never had this issue before.use rain water.
Week 2
Leaves. Color - Yellow
Leaves. Color - Black or grey
4y ago
3
4
Solved
FiFrElOt
Taches noires sur les feuilles
Demande de confirmation de diagnostique: J'ai remarqué des taches noires aux extrémités des feuilles. Je pense qu'il s'agit d'une carence en phosphore? J'ai un peu tardé à nourrir ma plante. Dans mon dernier arrosage: Ph 6.5 EC : 1.8 Terra bloom, green sensation, pure zym. Merci
Week 5
Leaves. Color - Black or grey
4y ago
1
1
Solved
totemas69
Leafs dying off yellow/dark brown/ black
Leafs slowly went from yellowish to yellow green dark brown black not sure whats causing this im not measuring ph so that could be first step to solve i guess cal mag P deficiancy????? definitely had some light burn as MH fce 3000 goes to max when its on 80prc lesson learned
Leaves. Color - Yellow
Leaves. Color - Black or grey
Plant. Stem - Red or purple
3y ago
2
4
Solved
Zegr8
Leaves burn
Hi! Is this nutes burn? Damage is on the upper/middle part of the canopy on very few leaves, but many more have black tips. I’m puzzled because during veg I was feeding the plant higher ppm than now and never had a problem!
Leaves. Edges burnt
Leaves. Tips - Burnt
Leaves. Color - Black or grey
5y ago
2
Solved
Mitch
Nutrient burn
How can I fix a nutrient burn on a seedling?
Leaves. Color - Black or grey
5y ago
1
1
Solved
Australianbuds
Leaves turning funny
Hello can anybody please tell me what this is and the cause plese for the leaves to be discoloured and dying ogf
Leaves. Color - Black or grey
2y ago
1
1
Solved
PolishFarmer
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
kelsiehoward95
First grow issues
Anyone know if this plant is gonna make it or what’s going on? Three different plants, First grow, all seeds are going good but these. Pictures are kinda hard to see. First two pictures are one plant. 3rd picture is 2nd plant. 4th picture is the 3rd plant.
Leaves. Color - Black or grey
3y ago
5
Solved
Prilyfe13
Gray leaves on buds with a massive concentration of trichomes. What is it?
No clue what this is. Light gray leaves, tons of trichomes. I'm a bit confused here. Should I just cut the buds that look like this to be safe? Or is this normal?
Week 12
Leaves. Color - Black or grey
3y ago
6
8
Solved
BisEsKlappt420
What’s the problem ?
Rqs Nl Auto week4 flowering BioBizz all mix biobizz nutrients What’s the problem ?
Leaves. Color - Yellow
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
3y ago
2
2
Solved
Mancha
Need some help, I'm really lost
Hi people, need some serious help here. The new leaves look like sh¡T. They are kinda yellowish and the tops are necrosed. Some spots on the leaves too! I added some silica in the last water but I don't know if was the cause. Soil pH varies between 6.5 and 7.0. Any ideas?
Week 5
Leaves. Color - Yellow
Leaves. Color - Black or grey
3y ago
7
Solved
ChefdexV2
Deficiency? P?
Looks like my girls have some deficiency, anyone know what it is and how to fix it organicly? Looks like potassium to me?
Week 3
Leaves. Color - Black or grey
3y ago
1
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
4y ago
1
Solved
ElMetitor
Color leaves
Hi do you know what these spots are ?? where the leaf is located it looks thin and is drying out. Thanks for help. I have used many types of insecticides.
Leaves. Color - Black or grey
6y ago
4
5
Solved
Aragon
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.
Week 3
Leaves. Color - Black or grey
5y ago
2
2
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. Deficiences
2y ago
5
5
Solved
Frnikola
What to do? → BF Runtz Auto - Day 42 - RH70, 80F in BioBizz Light Soil
On my last post, I was advised I have N tox, so I watered w/o BioGrow, just BioBloom and it's gotten much worse. The runoff EC was 1.5 (watered with 0.8, runoff pH was okay), so I’m guessing it's salt buildup. I plan to flush when this watering dries out—any thoughts?
Buds. Not fattening
Leaves. Color - Yellow
Leaves. Color - Black or grey
1y ago
1
Solved
WeedSt
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?
Week 2
Leaves. Wilting
Leaves. Color - Black or grey
6y ago
4
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
2y ago
2
4