Threads is in beta — try the new feed
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Threads
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Gray spot
Apolloo
started grow question 5y ago
Hello everyone! Some of my leaves have small gray spots on them, like the ones in the picture. What could be causing this?
Solved
Leaves. Color · Black or grey
likes
Organoman
answered grow question 5y ago
Nothing to worry about, just a bit of abrasion damage where the leaf tips are touching the soil surface, most likely at night when the leaves are lowered and the fan is blowing on them.
likes
Complain
Selected By The Grower
Similar Grow Questions
Solved
Amboss
Deadly Leaves
Start Week 9 … is this a Problem or normal?
Leaves. Color · Black or grey
2y ago
1
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
All_our_small_plants
Krankheit oder Schimmel?
She has produced her first two real leaves, which show a disease, but it could also be a fungal infection or mold affecting the plant. What do you think it is? Will she survive it?
Leaves. Tips · Die
Leaves. Color · Black or grey
1y ago
3
2
Solved
The_Wanderer
Help! Black Weed!
Help! Almost ready to harvest on the winter solstice. Black weed
Leaves. Color · Black or grey
10mo ago
9
8
Solved
Albgrow
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
6y ago
2
2
Solved
Karalis89
Hey friends, can you tell me what this could be? Should I be worried? It seems to be doing fine and it's the only leaf with spots, could it be due to some water accidentally falling on it? Thanks
Week 4
Leaves. Color · Black or grey
4y ago
3
3
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
Unkraut
What Deficiency?
What deficiency does this plant have? I have 15 plants inside this tent, all get the same nutes, all look great but only this one has these grey marks on the lower leaves
Leaves. Color · Black or grey
6y ago
1
3
Solved
baddawgLLL
a black spot
Suddenly, a very small black spot appeared on the leaves of the plant, very, very small. help!
Leaves. Color · Black or grey
5y ago
3
3
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
Royalgorillaxx
Leaves
Shall i cut them leaves?
Leaves. Color · Black or grey
Leaves. Other
6y ago
2
2
Solved
1juan420
greyish curling leaf tips and dieing branches after topping
the highest branches died after topping. It looks to me like they had the same symptoms like some new upper branches are developing now. It looks very dark & feels soft Temps were 17-19°C & Humidity was be 5.90%+ Water should 9, think ph reader might be wrong and ph is too low?
Week 7
Leaves. Color · Black or grey
2y ago
1
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
Blabina
My dwarves are sick, issue with leaves
Issues with my dwarves leaves, can you help me to identify them ?
Week 9
Leaves. Color · Black or grey
5y ago
4
10
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
Slickchigdog
Is this a calmag problem?
What problem do i have? Is it calmag? Help please. I grow in lightlix biobizz and with biobizz fertilizer
Leaves. Color · Black or grey
1y ago
1
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
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
Lukush
Black spots
I dont know wuts happening she was doing so weal, do you gise know wut thes black spots are ??, m feeling so bad for hear 😭
Week 6
Leaves. Color · Black or grey
6y ago
4
4
Solved
tangie
Yellow & brown spots in 2nd and 3rd week in coco-perlite nursery cup. What am I doing wrong? Fed until 20% runoff (extra), strained. Smth with roots?
2nd grow in 70/30 coco-perlite mix* & very similar issues w. yellow/brown spots in weeks 2-3, then stabilizes. *CalMag & pH buffered 6h @ 0.5mS, pH5.8, strained** & seed planted. Feed: W1: **Strained sol. + water 70/30, pH5.8
… Show more
Week 2
Leaves. Edges burnt
Leaves. Color · Dark-brown
Leaves. Color · Black or grey
2y ago
9
5