Threads is in beta — try the new feed
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Threads
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
Brown spots on leaves
Kenderbetyar
started grow question 6y ago
I've noticed a few brown spots on the main cola's leaves. The rest of the leaves are looking normal. What could cause that?
Open
Leaves. Color · Dark-brown
likes
Answer
Ianc427
answered grow question 6y ago
I’m going through the same thing at moment , tried to get help but no one answers me on the questions endless
likes
Complain
JesusChrist
answered grow question 6y ago
Sorry it may be Calcium and or Magnesium. Supplement with CalMag 1 ml per litre of water add before base Nutrients
likes
Complain
JesusChrist
answered grow question 6y ago
Calcium deficiency use calcium magnesium. Could be boron but that usually has twisted leaves and starts at the tips and is rare
likes
Complain
Similar Grow Questions
Solved
Ganjafarmer420flowers
Brown on leafs
Any help identifying this only on top couple of fan leaves fed yesterday then today that appeared feeding twice a week fed same as I did last time
Leaves. Color · Dark-brown
5y ago
1
1
Solved
MomnPoppaSeed
How can 1 add pictures?? My plant is showing rust colored spots in between veins on older leaves. Her run off and water PH are always similar at 6.2 in her cocoa core/pete/perlite/casting medium. I just gave her a small taste of Epsom salts but need to fix b4 it gets worse
Week 6
Leaves. Color · Dark-brown
7y ago
3
5
Solved
HomeGrown33
Brown Spots on Leaves
I’m noticing some light brown spots on my leaves. After researching it seems that it was either 1) Manganese deficiency 2) calcium deficiency or 3) overwatering. I don’t think I’m overwatering. It could be the nutrients but would like input!
Leaves. Color · Dark-brown
Leaves. Color · Mottling
2y ago
5
3
Solved
Flex1
Thankfully not my plant but what do you think this deficiency is? My first thought was actually that one plant fungus r something that causes brown circle like spots. This is the top of the plant. No curling to leaves.
Leaves. Color · Dark-brown
5y ago
2
Solved
Lil_Teddy
what cause it,Is it normal?
Week 7
Leaves. Color · Yellow
Leaves. Color · Dark-brown
Leaves. Color · Black or grey
6y ago
2
5
Solved
Smokeyboar
cal and mag canna coco
Leafs I think its cal and mag but unsure. If it was how do I correct it. Do I say flush with 10 20 liters and then give it 1 mill cal and mag per litrr all canna nutes I use
Leaves. Color · Dark-brown
6y ago
1
Solved
VikingBuds
Browning tips and lower leaves
Some leaves have a little brown on the tips, and some lowest leaves are turning yellow then brown, although I have been looking it up and it seems to be normal? It's not nutrient burn as I haven't given any. Any clues on what it could be or if I should be concerned?
Week 5
Leaves. Color · Dark-brown
6y ago
1
1
Solved
Jannis_Botanicum
Yellow/Brownish colored tips of leaves.
So, my girl now is 11 days old, while i was looking at here i noticed that the tips of the second pair of true leaves is soightly yellow/brownish colored, im worried for my plant. Could it be a wind burn ? I have a ventilator in my tent which was blowing at here. I moved it now.
Week 2
Leaves. Edges burnt
Leaves. Color · Yellow
Leaves. Color · Dark-brown
5y ago
2
3
Solved
Gemini_Grow
Manganese deficiency or rust?
Could it be manganese deficiency or rust? Few upper leaves are affected this ways showing some brown dots.. Could it be due to a PH fluctuation I had recently? Need some help
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
1
2
Solved
rosemary420
Is this a nutrient burn?
What should I do?
Leaves. Color · Dark-brown
6y ago
3
2
Solved
elevensixty6
Deficiency?? Excess? Neither?
Grown this strain before and had the same issue.. not sure if its a CalMag deficiency entirely. pH has remained at 6.0-6.5 or so in soil and didnt show signs until recently, seemed to have worsened after just two days of only CalMag and Ro water so I bumped up the bloom nutes.
Week 5
Leaves. Color · Dark-brown
Feeding. Deficiencies
5y ago
3
3
Solved
PapasGrow
Which pests do this?
Exactly what pest does this kinda damage? I have my guess, but wanna get other growers' opinion on this type of yellowing of leaves and brown spots. 6 weeks into veg. It started very early on at bottom leaves, once I trimmed them this brown spots appeared on top growth.
Leaves. Color · Dark-brown
Other. Bugs
5y ago
3
7
Solved
BudahBudz2020
Hey guys can anyone tell me what this is the new growth seems fine a tad bit lighter green but the older leaves some have this please help im leaning toward a cal mag deficiency Using bio bizz light mix Bio grow and a few drops of root shoot Week 4 of veg
Leaves. Color · Dark-brown
Leaves. Other
Other. Bugs
6y ago
4
4
Solved
Erasmus
Thoughts, should I be concerned?
One of my plants is developing twisted and spotted leaves. Is it just to much nutrients or something more?
Week 2
Leaves. Twisted
Leaves. Color · Dark-brown
6y ago
1
2
Solved
Sk1nR
Rust on leaves
Hi everyone. I've discovered rust spots on my leaves. I can't tell if it's fungal or nute burn, the rust doesn't seem to be coming off on my fingers which I think is a good sign? Does anyone have an idea of what it could be and whats the best 'next step' to take? Thanks IA ✌️
Leaves. Color · Dark-brown
5y ago
1
2
Solved
Milanko772
Prosím pomôžte je toto problém?
Is it a problem, please? If so, what should I do?
Leaves. Color · Dark-brown
6y ago
1
Solved
Kluless
Yellow brown leaves
Amateur HELP Baby looking very unwell. week 3. Leaves yellow / brown. Normal soil led light 60cm water 1L a day with nutrients.
Leaves. Color · Yellow
Leaves. Color · Dark-brown
6y ago
2
1
Solved
Magic_Chelsea_Crew
Lower Leaves turning brown
Is this a nutrient deficiency? It's only on the lower leaves of both plants.
Week 2
Leaves. Color · Dark-brown
5y ago
1
2
Solved
Nobody_NoMee
Nutrient Deficiency
What Deficiency’s are these ?? Using Coco+Perlite with earthworm castings and feeding with Fox Farm Nutes following the feeding schedule with CalMag every time I water at 6.2-6.5ph every other day. 1000ml of water per plant. All four clones have been fed the same since I got them
Leaves. Color · Yellow
Leaves. Color · Dark-brown
2y ago
4
Solved
Ktims420
I water my plants everyday , however I have mixed my nutrients “ph perfect grow, micro, and bloom” in with my water only the appropriate amount given on the bottle. Should I be using water with the nutrients everytime I water or switch it up with plain water as well?
Week 2
Leaves. Color · Dark-brown
7y ago
2
1