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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
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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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Similar Grow Questions
Solved
alhambra
First time grower in soil - Plant problem
I am a first time grower in soil. This plant is an autoflower and is 25 days into flowering. Can someone please help diagnose this? All the leaves are starting to turn yellow as well.
Leaves. Color · Pale
Leaves. Color · Black or grey
3y ago
5
3
Solved
Kushpooh
LEAFS DYING
The edges of the leaves are dry and black. Every single point of the leaf is burnt(black) or yellow...even some edges on the leafs of the coal are burnt. I guess it’s overfert...but I just flushed. Is it Ph? I haven’t checked in awhile. Is it they ready to be cut down?
Week 9
Leaves. Color · Black or grey
6y ago
1
2
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
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
Chilipadi
Grey spots appearing on both sides of leaves on this seedling. Already receiving light feed grow+calmag. What could this be?
Leaves. Color · Black or grey
5y ago
2
2
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
MarkWatney
Black spots?
Is this a deficiency, nutrient burn, or disease, growing in MG soil, recovering from overwatering as well.
Leaves. Color · Dark-brown
Leaves. Color · Black or grey
5y ago
1
1
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
HighGrower89
Dunkle Flecken auf den Blättern.
Hey.. On one of my White Widow plants, dark spots have been appearing on the leaves for days, and today I've also noticed the first spots on a Blue Dream.. Can someone tell me what's going on and how I can get rid of it? Removing the affected leaves hasn't helped.
Leaves. Color · Black or grey
5y ago
2
1
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
Bizio
Yellow leaves with grey/dark outline
I have some yellow leaves with grey/dark outline. Do you know the cause? Could be the humidity level too low? or K deficiency?! I'm not so sure about the last one. Help me guys please.
Week 11
Leaves. Color · Yellow
Leaves. Color · Black or grey
6y ago
2
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
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
Mephistacheles
Black spots spreading // Need your help!
Anyone got a clue what this dark spots could be? It started in a corner of the tent with 1 plant a few weeks ago and now it has spread to another. I suspect pH issues and a nutrient lockout bc of that. Not sure if its the same issue though..Could be an infection as well...
Leaves. Color · Dark-brown
Leaves. Color · Black or grey
3y ago
1
4
Solved
RunWithIt
Popped up around last week (week 4, monday). Prior to week 4, i had been watering with tap water, which in my area is pretty hard.(7.8+ pH) Been correcting pH to 6.8 with each watering since. (2 waterings since then.) Should i just continue feeding 6.8 pH water or add cal-mag?
Week 5
Leaves. Color · Black or grey
8y ago
2
4
Solved
HierroYOlivia
Dark tips
it seems to me that the tips of the leaves have a very dark color, it looks like an excess of nitrogen but in three weeks I have never fertilized and the only additions to my biobizz light mix are a sprinkling of guano kalong and 10% of worm humus biobizz.
Week 3
Leaves. Color · Dark-purple
Leaves. Color · Black or grey
5y ago
4
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
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
Fishcake
Black/brown spots
hi all its currently day 14 of flower i have noticed that there is spots on another one of my plants hope you guys could help me out
Leaves. Color · Dark-brown
Leaves. Color · Black or grey
Feeding. Deficiencies
6y ago
2
2
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