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Back to Grow Questions
Any ideas on this?
MOcaver
started grow question 7y ago
I'm guessing this is some sort of deficiency. Some of the spots are rust like and occur and young and old leaves. Any opinions? Advanced Nutrients 3 part. No supplements.
Solved
Leaves. Color · Mottling
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Grey_Wolf
answered grow question 7y ago
@MOcaver
Looks like Calcium deficiency to me mate I'd foliar feed the leaves with some calmag and some chelated iron couldnt hurt either
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Selected By The Grower
Buddie
answered grow question 7y ago
https://www.growweedeasy.com/cannabis-plant-problems/calcium-deficiency Try looking here, hope it helps
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Fruitgrower
answered grow question 7y ago
Calmag bro.
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RastaMouse
answered grow question 7y ago
I agree calcium deficiency is most likely the problem. Calmag will solve the problem.
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Similar Grow Questions
Solved
Dirty_Hippy
Brown spots followed by necrosis on Mandarin Sunset.
Any idea what could be causing this necrosis on my leaves? Starts with the spots and grows to crisp up the leaf. My soil should have plenty of calcium and magnesium. Happened once before on Gelato and never deciphered it.
Week 10
Leaves. Color · Mottling
5y ago
11
7
Solved
Toiletmucus
Deficiency?
I noticed this spot on one of the fan leaves. It only appeared in the last couple of days. I have been feeding small amounts of calmag and biobloom. I looked at deficiency charts but I’m unsure. What could it be?
Leaves. Color · Pale
Leaves. Color · Mottling
2y ago
2
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Solved
lezhonka
Having persistent yellow/brown spots on my leaves. Took a close up picture to show them better. I adjusted my nutrient schedule to increase phosphorus content. pH is checked daily. What else can I do to eliminate the problem?
Week 9
Leaves. Color · Mottling
8y ago
8
4
Solved
Firstpoison
White spots
What are those white spots on the leaves?
Week 4
Leaves. Color · Mottling
6y ago
1
Solved
Hvk1907
Leke problemi
Friends, what are these spots caused by?
Leaves. Color · Mottling
6y ago
1
2
Solved
growbert76
Is this really a potassium defiency? Any suggestions how to deal with it?
Hey Guys, need your help please. It's FD 28 and the leaves of my three White Widows show some signs of a nutrient deficiency (at least my assumption).I'm growing in living soil w/o any additional fertilizer and watering with a 7:3 mix of osmose/tap water and 0,5 ml/l CalMag.
Week 8
Leaves. Color · Dark-brown
Leaves. Color · Mottling
Feeding. Deficiencies
3y ago
4
4
Solved
Captain_Bringdown
The middle plant is somehow very bad off, while my other 2 plants seem fine, making me think its not humidity/nutrient related, but i really cant imagine what it would be, has anyone experienced this before? it went from perfectly fine to this in just 4 days.
Week 9
Leaves. Color · Mottling
7y ago
2
2
Solved
Dean1
Need help urgently my plants are dying what’s going on had white spiders a week ago treated it with diluted washing up liquid got rid of spiders but at what cost help 🙏🙏🙏🙏🙏🙏🙏🙏
Week 15
Leaves. Color · Mottling
5y ago
1
1
Solved
Filippo33
Rostfelcken
I found small spots (similar to rust spots) on the 2 ladies now. I saw something on the lower leaves. Can someone give me advice on what this could be or how I can get it under control so it doesn't spread further? Thanks in advance!
Week 2
Leaves. Color · Mottling
6y ago
1
1
Solved
ezgrows4anoob
What's going on with my clones? Do not have much information to add. VPD is not terribly off, DLI around 25.
What's going on with these clones? Not sure what it could be. They could possibly be rootbound. They should have been transplanted a few weeks ago but I did not have the space.
Week 12
Leaves. Color · Yellow
Leaves. Color · Dark-purple
Leaves. Color · Mottling
4y ago
3
2
Solved
NamasteDaze
Problem or No?
The leaves have been loosing some of their dark green color between the veins, looks a bit washed out or mottled on both plants. Slow progression over the past couple of days. This is my first grow, any advice would be greatly appreciated!
Leaves. Color · Mottling
4y ago
4
Solved
jamjam887766
leaf spots and curl
I have a few leaves with some spots and a few that have a side that curls. What do you guys think? Right now I'm just using Fox Farms Ocean Forest soil and water - I'm planning on adding nutrients this week. Will that solve these issues?
Week 3
Leaves. Curl up
Leaves. Color · Mottling
6y ago
2
Solved
kakanero
Does anyone know what happened on the leaves and how to cure it? See the last photo. Thaks!
Week 8
Leaves. Color · Mottling
8y ago
1
2
Solved
Growpotkin
Purple spots on leaves?
A few leaves have started showing purple spots, some with pale green/whitish bits as well. Picture above. Any help would be great. I’ve been feeding on the BioBizz schedule every second watering, usually every other/every third day.
Week 9
Leaves. Color · Mottling
6y ago
6
3
Solved
SmokeableHobby
Does this look like a calcium deficiency?
Seeing yellowing/browning on the fan leaves for my bonsais. Is this a calcium deficiency?
Week 4
Leaves. Color · Yellow
Leaves. Color · Mottling
6y ago
3
4
Solved
Lew420
Deficiency or excess?
Looks to me like potassium deficiency leading to calcium and magnesium deficiency also... Any other suggestions?
Week 4
Leaves. Color · Yellow
Leaves. Color · Mottling
Leaves. Other
4y ago
2
3
Solved
Chihuahuenynos
Bugs, spiders or fungus?
Hi everyone, what should i do with this in floration? Neem oil? Soap? Im starting the 9 week and i think that if i use neem oil now, it will leave some taste on the buds. I touched some leaves and the white marks stay, it isn't powder, but is white. Thank you 💚
Leaves. White powder
Leaves. Color · Mottling
Leaves. Other
6y ago
3
4
Solved
Kayanesta
What is causing this?
What is causing this? It only seems to be on the older leaves and only on this plant. They’re all being fed the exact same.
Leaves. Color · Mottling
4y ago
5
5
Solved
Mozartek
Manchas en hoja
Hello! These spots appeared on a leaf of a GG#4 from Zamnesia in its fifth week of vegetative growth. It's not something I'm worried about, as the plant looks healthy and is growing vigorously. But I've never seen this type of spot before and I'd like to know the possible reasons for it.
… Show more
Leaves. Color · Yellow
Leaves. Color · Pale
Leaves. Color · Mottling
2y ago
3
4
Solved
DrGreenThumb24
Potassium?
Got a bit of an issue starting to show up on some leaves. Only on one plant.Could it be potassium?
Week 6
Leaves. Color · Mottling
3y ago
1
3