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Back to Grow Questions
What is Themis leaf issue
Dbrito3063
started grow question 4y ago
What is Themis leaf issue
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Leaves. Color - Black or grey
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Answer
Hashy
answered grow question 4y ago
You have fed to much nitrogen and got nitrogen toxicity.
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Cannabis_King
answered grow question 4y ago
Might be an infestation of thrips looks very similar
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Similar Grow Questions
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
PurpGod
Nitrogen toxicity? Kind soil
How to treat nitrogen toxicity in roots organic soil with kind living soil in bottom 1/3 . only watered 6.0 purified water.. week 3-4 flower
Leaves. Curl down
Leaves. Color - Black or grey
Other. General questions
5y ago
2
3
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 W2: AN M+G+B 1-1-1 + Simplex CalMag Plus 0.4mS Help
Week 2
Leaves. Edges burnt
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
1y ago
9
6
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
5y ago
4
5
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
PlanTings
Black Leaf
Does anyone know what's this? I just transplanted it, yesterday, and one of the leaves is getting black and smaller.
Leaves. Color - Black or grey
5y ago
3
2
Solved
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
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
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
5y ago
3
4
Solved
hazaj
Dark leaves, clawing
So couple weeks ago my plant started turning into dark green colour . Using biobizz nutrients, using always 1/2 dosage, sometime even less in big pots. I though it was nitrogen toxicity. But not sure anymore. If anyone has idea what it could be? Using 0,5ml of their grow
Leaves. Color - Black or grey
1y ago
4
6
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
ZhugeTsuki
What the actual heck is going on with these leaves
Leaves from all around the plant are showing these symptoms. Much more detailed info in grow diary but current runoff ec is 1.7 and problem is spreading quite badly.
Week 7
Leaves. Tips - Die
Leaves. Twisted
Leaves. Color - Black or grey
5y ago
1
3
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
5y ago
2
3
Solved
Smokeyboar
If a plant has cal and mag and phosphorus def how do you correct these
If a plant has cal and mag and phosphorus def how do you correct these
Leaves. Color - Black or grey
5y ago
1
3
Solved
HighGrower89
Dunkle Flecken auf den Blättern.
Moin.. Bei einer meiner White Widow kommen seit Tagen dunkle Flecken auf den Blättern und seit heute sind auch die ersten Flecken auf einer Blue Dream.. Kann mir einer sagen was da ist und wie ich es weg bekomme? Betroffene Blätter entfernen hat nicht geholfen.
Leaves. Curl up
Leaves. Color - Black or grey
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
Solved
ButtersStotch
Leaf Deficiency
What deficiency do you think this is?
Week 10
Leaves. Color - Black or grey
5y ago
4
4
Solved
Portnugs
Silverish hue to leaves
So I have a slight change in color on one of my girls, leaves seem to be getting a bit gray very uniform color change but only on some of the leaves. Im not sure if this symptom is due to nutrients at first I thought mold but it's very uniform. Please anyone have tips?
Leaves. Color - Black or grey
4y ago
5
5
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
2y ago
5
3
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
Leaves. Curl down
Leaves. Color - Black or grey
1y ago
1
2