Check the winners The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
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
What is Themis leaf issue
Dbrito3063
started grow question 5y ago
What is Themis leaf issue
Open
Leaves. Color - Black or grey
likes
Answer
Hashy
answered grow question 5y ago
You have fed to much nitrogen and got nitrogen toxicity.
likes
Complain
Cannabis_King
answered grow question 5y ago
Might be an infestation of thrips looks very similar
likes
Complain
Similar Grow Questions
Solved
Indica_Jones
what is this ?
Ist alles okay mit den Pflanzen ?
Leaves. Color - Black or grey
6y ago
2
3
Solved
einamio
I keep loosing leaves to some sort of nasty necrosis. It affects leaves at all levels, small and big randomly. I had to remove a lot of dying foliage
At first it looks like a asymmetrical spot of leaf starting to thin out to lighter color then tissue dries and turn black. I have high runoff EC3.3 and I blame Easy boost pellets because I only add rootjuice 1ml/L and sugar royal 0.5ml/L to my water. What is it and how I fix it?
Week 5
Leaves. Tips - Die
Leaves. Color - Black or grey
Feeding. Deficiences
2y ago
5
5
Solved
Glen1818
Nutrient Burn ?
Hello, can some one Tell me whats this is ? only one of four plants had this problems im watering when its dry , 2.8-3.3L
Week 9
Leaves. Color - Black or grey
4y ago
3
4
Solved
hoosierj
Can anyone tell me why my leaves are curling up
Leaves. Color - Black or grey
6y ago
3
Solved
BeardedTree
I posted some photos of my soil white cookies in week 14 of this diary. The sugar leaves are white almost looks bleached. Its stacked with trichs but is white and I dont know if that's good or bad. Nothing dieing and theyve been white for 3 weeks. No sign of mold, stress, nothing
Week 15
Leaves. Color - Black or grey
8y ago
3
2
Solved
Royalgorillaxx
Leaves
Shall i cut them leaves?
Leaves. Color - Black or grey
Leaves. Other
6y ago
2
2
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
6y ago
4
3
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
Clutch
What leaf problem am I dealing with?
Fan leaves are turning black from the inside to outside. What's going on here?
Leaves. Color - Black or grey
5y ago
3
4
Solved
Clutch
What leaf problem am I dealing with?
FanLeaves are turning black from the inside to outside. It's looking like a starting problem. Please help me recognize this 🙂 first picture (leaf on the bottom shows it best)
Leaves. Color - Black or grey
5y ago
5
6
Solved
eldruidamx
What is....?
Hello. Please help me identify the problem ... today the 8th week of vega ended, and some kind of illness began.(((
Week 8
Leaves. Color - Black or grey
6y ago
4
3
Solved
Zuzuman
Mehrere Mängel
2. Grow mit Gorilla Cookie Autoflower Samen. Hinten links sehen die Mängel aus wie hinten rechts, denke Phosphor also laut Bildern und vorne ist so ziemlich vieles gemischt aber extrem. Der einzige Bud der richt wenn man ihn anfasst ist der von der hinten rechts die anderen nicht
Buds. Not fattening
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
1y ago
2
Solved
furphy
Blackening leaves on 2 week old seedling.
Any ideas what has caused the blackening on the leaves? More effects of the overwatering? Hope it's not a lost cause but I'm losing hope.
Week 1
Leaves. Color - Black or grey
6y ago
2
1
Solved
mushimushi
Deficit or excess? Or what
What happen
Leaves. Color - Black or grey
4y ago
1
5
Solved
Amboss
Deadly Leaves
Start Week 9 … is this a Problem or normal?
Leaves. Color - Black or grey
2y ago
1
Solved
Mekster
Week 2 flower.Buds turning black
Buds and leaves under are turning black, any advice? Something to worry about?
Week 6
Buds. Other
Leaves. Color - Black or grey
3y ago
3
2
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. Deficiences
6y ago
2
2
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
4y ago
3
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
4y ago
5
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
6y ago
3
3