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
Black spots on leaves
Trickotreat47
started grow question 2y ago
So I have those black spots on leaves on top of the canopy of my plants. Can someone please explain what are those and how can I treat it? Also the edges of the leaves on top of the canopy are brown and crispy.
Solved
Leaves. Color · Dark-brown
likes
Organoman
answered grow question 2y ago
The burnt tips are a nutrition/pH issue. The black blotches could be a fungal problem due to poor air exchange/high humidity.
1 like
Complain
Selected By The Grower
Similar Grow Questions
Solved
Highway93
Help pls
Was ist das für ein Mangel? Ist das gefährlich für meine pflanze? Und wie behebe ich das?. Danke im voraus:)
Leaves. Color · Dark-brown
5y ago
2
Solved
NeverToxic
Handel es sich um Kalzium oder magnesium mangel oder ist das ein Pilz
Es handelt sich um Skywalker von dutch passion ist jetzt in der 3,5 Woche in der Blüte gedüngt wurde sie mit green house feeding grow zum Anfang und nach der zeit Umstellung habe ich bio bloom gedüngt nach Hersteller angaben erde von plagroon braune flecken seit 2Tagen überall
Leaves. Color · Dark-brown
2y ago
1
Solved
Schlurpypurpey
First time growing/Need help in late flower
Over the last 9 days my plant has gone from happy and healthy to sugar leaves pointing straight up near the top of plant and drying and curling up on the lower levels. Is this from too much light or did I over feed late in flower? First grow/ no diary. Can I save or do I chop?
Leaves. Curl up
Leaves. Dropping off
Leaves. Color · Dark-brown
2y ago
8
2
Solved
ElevatedThinking
Why are there soon many brown spots all of a sudden in WK 7?
I'm entering Wk 7 and the same lady is hurting again. She's been feeding heavy for last few weeks and doing great. So, I gave a light water/microbes dose w/can and Epson. Now I think its potassium or something else entirely... Brown spotting, yellow, crispy? Thoughts?
Week 7
Leaves. Edges burnt
Leaves. Color · Dark-brown
7y ago
3
3
Solved
BrandoBuds
Yellow/ brown leaves #2 (pics didn’t post the 1st time)
Hey guys so my plants are starting to turn this yellowish color and I’m not sure what the problem could be. Sorry for the second pic, it’s kinda blurry but that’s the actual color compared to the other leaves. It’s my first grow and I’m kinda lost on a solution . Many thanks
Leaves. Color · Yellow
Leaves. Color · Dark-brown
7y ago
1
1
Solved
Oldmanbud__50
Help on cal diffcency
Hi can I use blood fish n bone to sort a calcium problem. In my plant.. Only on 1 fan leaf.. Doing this on a very low budget. Ty in advance
Week 2
Leaves. Color · Dark-brown
6y ago
1
1
Solved
Marinik
Why leaves brown? (urgent)
Some leaves turn brown as in the photo. Leaves in the middle turn brown first, then bottom leaves. Now I try making larger lamp-to-plant distance and feeding less nutrients, but no good sign appears. Other conditions are stated in my diary. Why do you think it is?
Week 7
Leaves. Color · Dark-brown
6y ago
2
Solved
Cannabis_carlitos
Cal-mag issue that won't go away
I keep getting a cal-mag deficiency. I have been using 1ml per liter of water - 4ml roughly per gallon. It is only 1 plant, the same which has had the same cal-mag issue since early veg. I include cal-mag every watering and nutrient feed day. You can see images for reference
Week 9
Leaves. Color · Dark-brown
4y ago
2
3
Solved
xaden
Brown spots on leaves? Is this lockout or something else?
Can anyone tell me what this might be? Need help identifying plant symptoms
Leaves. Color · Dark-brown
Plant. Other
1y ago
1
4
Solved
Ace860524
Well I'm in early flower at this point leaves still abit yellow should I up my feeding at this point as I'm at 739 ppms and when should I start my bloom nutes
Week 5
Leaves. Color · Dark-brown
7y ago
1
1
Solved
Wannabean
brown spots on leaves
Got some brown spots on random leaves for about 1 1/2 veck ( Only smallest girl ) it seems not to spread to the others. what is it? 😪😪 Peace
Leaves. Color · Dark-brown
6y ago
1
1
Solved
Jeremi420
Foglie bruciate.
Ciao ragazzi?spero vada tutto bene. Ho delle bruciature nelle foglie di una sola pianta, ho dato bio grow e top max biobizz. Umidità 50 % temperatura 27/30 °c purtroppo. Io penso sia dovuto alle luci troppo vicine, ma volevo un vostro parere. Grazie mille.
Week 4
Leaves. Color · Dark-brown
6y ago
5
4
Solved
Eddjack
Deficiency?
I need help recognizing a deficiency. i think it is cal mag, but it seems strange it has quite heavy nutrition. the pH of the earth is 6.20. i'm at 7 weeks and it also seems a bit slow in flowering. what can i do?
Week 11
Leaves. Color · Dark-brown
Leaves. Color · Mottling
5y ago
4
4
Solved
antekirtt
End of Cycle or something to be afraid
Hi everyone, I think the brown leaves just reflect the end of cycle (WG started flushing 4 days ago, DSD33 today). I don't see signs of mold or something rotting, brown leaves do not detach, both plants show already some amber trichomes. What do you think?
Week 6
Leaves. Color · Dark-brown
4y ago
2
8
Solved
FatalFarmer
Brown spots on one seedling
I noticed some small brown spots forming on one of my plants leaves, not sure what it is, maybe early sign of cal deficiency? The other plant looks nearly identical with out these spots, any advice helps although it could be too soon to tell what it is...
Week 2
Leaves. Color · Dark-brown
6y ago
3
3
Solved
SpritzPetrus
Brown spot on leaf
Hi, do anyone have idea of what caused the brown spot on the Fat Banana leaf?
Week 2
Leaves. Color · Dark-brown
6y ago
2
2
Solved
Budmarley2221
Deficiencey
Can anyone tell me what is cauing this i thought a calcium deficiency ?
Week 4
Leaves. Color · Dark-brown
6y ago
4
3
Solved
TickleToast
What am I looking at?
Redish Brown spots, and slight discoloration. Magnesium deficiency? Calcium? Other? Gave them a splash of Calmag, but was it even necessary? OR, should I have just swapped nutes and wait, then correct if not improved? (It was nute day, that's why I ask!)
Leaves. Color · Dark-brown
6y ago
2
2
Solved
Frostynuggzzzz
Nutrient burn? Deficiency?
Moby Dick Auto, getting closer to harvest but not there yet. Getting nitrogen abundance? Not to sure how to read this. She's just been sitting in the quite hot sun all day but sche has before, might have overfed bit using biobizz (not noticeably different doses thant usual)...
Leaves. Color · Dark-brown
2y ago
1
1
Solved
Albgrow
Nutrients problem!
Any one can explain this? I'm in 3 week of veg and I'm using Advanced nutrients; Grow 1ml Micro 1ml Bloom 1ml B52 0.5ml Mother earth 0.5ml
… Show more
Leaves. Twisted
Leaves. Color · Dark-brown
Leaves. Other
6y ago
2
5