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Back to Grow Questions
What is Themis leaf issue
Dbrito3063
started grow question 4y ago
What is Themis leaf issue
Open
Leaves. Color - Black or grey
likes
Answer
Hashy
answered grow question 4y ago
You have fed to much nitrogen and got nitrogen toxicity.
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Complain
Cannabis_King
answered grow question 4y ago
Might be an infestation of thrips looks very similar
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Complain
Similar Grow Questions
Solved
HomeGrowBro
Late flowering damaged leaves
Hi. Should I be worried? What action must I take. I dont want to spoil this grow. Thanks
Week 15
Leaves. Color - Black or grey
3y ago
1
3
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Unkraut
Seedlings (week3) lower leaves look yellow/dry
Lower leaves look bad, some are yellow, some look dry and dead...
Week 3
Leaves. Color - Yellow
Leaves. Color - Black or grey
5y ago
1
3
Solved
JoeyJoeGrowJoe
Leaves brown and crispy
Leaves brown and crispy Day HR % 55 Night HR % 65 watering them everyday, could that be the problem ???
Week 5
Leaves. Color - Black or grey
5y ago
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Organic_LarF
1 branch doing strange
The entire plant is looking fantastic, just this 1 branch, the lowest or first 1 to form has never grown like it supposed to. The other 1 is allready gone for 1 month. Ive pulled it of because I dont like the colour of those leafs.
Week 11
Leaves. Color - Black or grey
5y ago
1
1
Solved
Dippp
Problem with plants in the 3rd week of vegetation.
I'm posting again because I accidentally marked it as resolved. I was using BioBizz CalMag from the beginning, but when I switched to Advanced Nutrients, I stopped because Ph Perfect Sensi Coco Grow A and B already contain CalMag.
Leaves. Curl up
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Leaves. Color - Black or grey
1y ago
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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
7y ago
2
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Solved
Nocturnalgardener
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im just wondering if you think this is a calcium deff?
Week 9
Leaves. Tips - Burnt
Leaves. Color - Black or grey
4y ago
2
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
2y ago
2
4
Solved
Ner0z
Is this leaf septoria?
Here we go again. What am I looking at here? Is this leaf septoria? How should I tackle this one lol
Week 2
Leaves. Color - Black or grey
5y ago
4
3
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Fat Banana Auto coloring
Fat Banana Auto, it's a giant compared to the others, and it seems very thirsty. 2x1,5L a day in coco, and it dry this evening. But what are the different grayish color on the leafs?
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5y ago
1
2
Solved
portcityplug
Flower development
I'm starting my week 3 of flower I'm starting to notice inside of my canopy some of my leaves in Bud sites are getting very wilted and going black could this be the start of a mold or is this a natural thing should I remove anything that looks like this ? Also my humidity is 70
Leaves. Color - Black or grey
5y ago
1
1
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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
3y ago
3
1
Solved
BigGing432
Nutrient Burn, Leaf Septoria, Nutrient Deficiency? Or something else?
I have been having issues with the Purple Haze. I've tried adjusting the Temperatures, adding additional Cal-Mag, changing lumen intensity etc. I believe this may be nutrient burn? Added an old image of leaf before mainlining, the plant is 1 week old after mainlining was done.
Week 2
Leaves. Color - Yellow
Leaves. Color - Black or grey
Roots. Too few
5y ago
3
3
Solved
timbarin
What deficiency do you think I'm dealing with? These are old fan leafs.
Week 13
Leaves. Color - Black or grey
4y ago
4
2
Solved
TupacFR
Old leaves , black spot
Hello , today i cutted some leaves lowest who were yellow , on the plants. these leaves do not have much light. but i found some black spots and i don't know if it's lack of sun and simply died ? Can i just cut them ? What do you think about that ? Thanks
Week 9
Leaves. Color - Black or grey
5y ago
1
2
Solved
MEDICAT
What happened to the leaves?
What happened to the leaves? Was it caused by too much water? (Coco ph5.8)
Leaves. Color - Black or grey
4y ago
4
3
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
5y ago
2
3
Solved
GreenBean
leaf discolouration
edges of leaves are a blackish tint
Week 20
Leaves. Edges burnt
Leaves. Color - Black or grey
6y ago
1
Solved
Corwinism
What's Happening to my Glookies? Lower Growth Yellowing with Grey/Light Brown Spots.
Yellowing with grey/light brown spots occurring on the Glookies plants (starting from the tip of the leaf). I believe it may be due to the Fox Farm Ocean Forest soil mix but any advice or input on what is possibly happening is greatly appreciated. Fingers also fused together.
Week 2
Leaves. Color - Yellow
Leaves. Color - Black or grey
4y ago
3
1
Solved
Royalgorillaxx
Leaves
Shall i cut them leaves?
Leaves. Color - Black or grey
Leaves. Other
5y ago
2
2