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Back to Grow Questions
Brown spots on leaves
Cloudbutter
started grow question 5y ago
Any thoughts on these brown spots? They have popped up on a few leaves on the same plant (Amnesia).
Solved
Week 9
Leaves. Color - Dark-brown
likes
Fruitgrower
answered grow question 5y ago
Not sure, looks like damage from the fan or just a damaged leaf. Don't think it's a nutrient issue.
1 like
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Selected By The Grower
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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
4y ago
2
Solved
fiatchd
Yellow Leaves again
Leaves are turning yellow/brown again, should i give it a proper flush again?
Week 5
Leaves. Color - Yellow
Leaves. Color - Dark-brown
2y ago
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Solved
Smokin_Joe
Late Flowering Stage Deficiency or Nutrient Burn
I'm not sure if this is nutrient burn or some sort of deficiency. Burnt tips were from possible previous nutrient burn, but now I'm seeing Brown spots and some discoloration. Please check my week to see full details.
Week 16
Leaves. Edges burnt
Leaves. Color - Dark-brown
5y ago
3
3
Solved
Rogar13
I wanted to ask if you think this plant has mold or if it's just a major deficiency due to a blockage. I have an indoor plant next door with some plants growing with dark spots, it's in my previous question. Sorry for giving more information, I don't know what would help.
Leaves. Color - Dark-brown
Other. General questions
1y ago
1
Solved
Mosherd7
Unknown rust on 7th flowering week
This started as what I thought was a cal/mag deficiency, bought some, gave it for a week at a good dose and 6.3ph, and this intensified and switched from just lower leaves to the upper and a few sugar leaves on one plant. Any ideas? May calmag takes awhile? Or wrong diagnosis?
Leaves. Color - Dark-brown
Feeding. Deficiences
6y ago
1
3
Solved
Tango_Hotel_Charlie
Brown spots
What is this? It's affecting newer growth, first or second set of fan leaves off thee top of the colas. Also, this drooping, is this stress from the light? This is the center of my tent, and would appear to only affect tallest colas of this plant.
Leaves. Curl down
Leaves. Color - Dark-brown
Setup. Lighting
6y ago
5
Solved
Blue_psyche
Mold?
Some sugar leaves are dry and brown, do I have to cut off them?
Week 7
Leaves. Color - Dark-brown
Other. Mold
6y ago
2
3
Solved
Magic43562
Brown spots
Brown spots only on 1 leaf, is this a problem? Wasn’t there this morning
Leaves. Color - Dark-brown
6y ago
4
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
5y ago
2
2
Solved
GermanGrowsCannabis
Kann mir irgendjemand sagen was sie hat ? Es kann soviel sein ich Blick nicht mehr durch
Week 6
Leaves. Color - Dark-brown
6y ago
3
4
Solved
myketb
Mg Mn P K deficiency?
Mg Mn P and K deficiency? Only happen on mid-lower leaves. How to fix this problem on my mother plant in soil substrate? Top leaves are OK. My watering is pH 6.5 and foliage spray CalMag 1ml/L a few time already and still see this happen on lower leaves. 🙏
Leaves. Color - Dark-brown
4y ago
3
4
Solved
Buddabud
I am seeing brown spots on the smaller leaves of upper colas, plant looks healthy besides them, does anybody know what they are? Lsf maybe?
Week 10
Leaves. Color - Dark-brown
6y ago
2
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
3y ago
2
3
Solved
TweetNL
Some brown spots showing on the top sugar leaves. I suspect it is due to the cooling fan of the light blowing down hot air? I've adjusted the fans to blow air directly over the top of the main cola's and I increased the light distance.
Week 9
Leaves. Color - Dark-brown
7y ago
1
1
Solved
JackOfAllTrades
Brown Spots?
Hello, she got these spots on a leaf a week ago. Today, there are noticeably more. The leaves feel like they're dried out, in the brown spots. What's wrong with my plant and how can I fix it?
Leaves. Color - Dark-brown
8mo ago
1
3
Solved
lovely_neighbours
Brown black spot crispy edges
I need help! Northern Light has Reddish brown spots turning dark-gray and crispy dark edges on the top leaves! It looks like a different issue from week 6 where gray spots appeared on the bottom leaves? Any ideas? Thanks
Week 8
Leaves. Edges burnt
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
4y ago
2
2
Solved
PlaguedGardens
What could be happen to plant C?
Week 3
Leaves. Edges burnt
Leaves. Color - Pale
Leaves. Color - Dark-brown
6y ago
1
3
Solved
idkman1337
plant leaves color change and dots
plant leaves turning brown and getting lots of small dots my guess so far was potassium and phosporus deficiency but after feeding em with biobizz bio bloom last 2 weeks nothing improved but got worse and worse conditions: 70% humidity 23° C in tent contstant airflow
Leaves. Color - Dark-brown
3y ago
1
2
Solved
CanaryGrow
Leaf issues
Looking at the leaves, what you think is the issue with this plant? every single morning i have couple of totally yellow leaves at the bottom, edges are getting dark green and then dry. I flushed the plant but didnt see any improvement. I have 2 more plants that are doing great.
Week 14
Leaves. Curl down
Leaves. Color - Dark-brown
6y ago
2
2
Solved
Sitej
Leaves
Dots began to appear on the leaves and the tips began to curl upward, I water them with fertilizers every day, the output is always 100 ppm less than the input, what could it be?
Week 7
Leaves. Color - Dark-brown
2y ago
4
4