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Back to Grow Questions
Brown spots on leaves
Cloudbutter
started grow question 6y 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 6y ago
Not sure, looks like damage from the fan or just a damaged leaf. Don't think it's a nutrient issue.
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Selected By The Grower
Similar Grow Questions
Solved
Goenndalf
More rusty spots
See this now on more and more leaves. Only upper fan leaves that get good light exposure seem to be affected from this and also the clawing. Have backed off the nutes completely for now and will add ground egg shells to the water in the hope its a Ca deficiency.
Week 8
Leaves. Curl up
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
1
1
Solved
Misanthrope
Dry brittle leaves
Discoloured older leaves curling up at the edges and turning dry and brittle. I think my problem is over or under watering. I've been very careful to avoid overwatering so I'm leaning towards the latter but what I've read online suggests dry/brittle means overwatering. Thoughts?
Week 4
Leaves. Curl up
Leaves. Color · Dark-brown
5y ago
3
3
Solved
Soulgrow_x
What causes this
What is this ? Happened over night
Leaves. Tips · Burnt
Leaves. Color · Dark-brown
4y ago
1
3
Solved
Greenhorn101
Nitrogen burn?
A bit of delay getting the diary going! Started LST this week an give it some fertilizer after. Seems like it might have got a bit of nitrogen burn on some leaves? Might go back to the water!
Week 3
Leaves. Color · Dark-brown
6y ago
1
1
Solved
Frost
I’ve been using Biobizz AllMix and I fed her Advanced Nutrients Sensi Grow. Even tough flushed her twice, it has not stopped yet. Burned leaves symptom continues. Seems like it’s going worse.
Week 8
Leaves. Tips · Burnt
Leaves. Color · Dark-brown
Plant. Stem · Red or purple
6y ago
4
10
Solved
GrowerNL
Rust on leaves PLEASE HELP!!
Rust on leaves i water with pH 5,8 EC 2,0 i grow coco EC runoff 1,8-1,9 pH runoff 7,0-7,5 but pH runoff coco is not something to rely on i don’t use calmag want to use it since this problem i have given him some pK today
Leaves. Curl up
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
1
Solved
AlienScrOG
leaf !?... no real problem.. is it a stress due to excessive handling of fertilizers or the breaking of the field in stops and leaves for training?
good morning guys I noticed some burnt leaves I don't understand if it was a slight lowering of the level of the dwc ..because I noticed some slightly dry upper roots then I increased the level and after the roots improved ... I don't understand if that machine is due to stress o
Week 5
Leaves. Color · Dark-brown
Leaves. Other
Techniques. LST
4y ago
2
Solved
guerilla
Calmag deficiency?
Hi all. Almost certain what this is. But just need reassurance please 🙂 I just need to confirm this can be fixed with calmag?
… Show more
Leaves. Edges burnt
Leaves. Color · Dark-brown
Feeding. Deficiencies
5y ago
4
5
Solved
lonergrower
Brown rust spots on oldest leaves
Brown rust spots on oldest biggest leaves with curling inward - the rest of the flower is fine, just some occasional small yellow spots. No sign of pests. Maintaining pH ~6.5 but have soft water. Suspect cal/mag deficiency or nitrogen toxicity. Thoughts?
Week 4
Leaves. Curl up
Leaves. Color · Dark-brown
Feeding. Deficiencies
2y ago
7
4
Solved
Lapolda
Deficit?
Hello, everyone. Thanks in advance for the advice. Is this a nutrient deficiency?
Week 12
Leaves. Color · Dark-brown
4y ago
1
Solved
Deli_Weed
Mancha en hoja
What’s causing some of the leaves to look like this? Is it a deficiency or excess? I was watering with 1000 ppm, but I saw some burnt tips and dark green color on the leaves, so I gradually lowered it to 500 ppm, and today I noticed those spots (the drained water is at 750 ppm) (coco and perlite).
Leaves. Edges burnt
Leaves. Color · Dark-brown
7y ago
3
3
Solved
Otherland_Wildspice
Orange Leaves? Is This Normal?
I noticed some orange/red colors on the leaves is this normal? What caused it?
Leaves. Color · Red or pink
Leaves. Color · Dark-brown
5y ago
1
1
Solved
Solitude
Curl up and brown spot leaves
Leaves curl up and has brown spot around their blade is it potassium deficiency or salt built up? thank for any advice
Week 17
Leaves. Curl up
Leaves. Color · Dark-brown
6y ago
1
1
Solved
romi27
What kind of deficiency? What should I do? By the way, they're autos.
What kind of deficiency do I have going on here? I gave a good dose of calmag last night. The first signs were the dark spots on the leaves. Been feeding ff bloom nutes every other day, 1/4 to 1/2 strength. started from the bottom. Leaves turn yellow and then dry up.
Week 6
Leaves. Color · Yellow
Leaves. Color · Dark-brown
5y ago
4
3
Solved
penthausgrow
Help diagnose hydroponic plants! Too much light/heat? Nutrient issue?
The plant's leaves on the right are wilting and drying out, while the leaves on the left are spiking. Just did a nutrient/water change but it didn't help, and it looks like growth is being stunted on the right plant. Humidity has been around 45-55 rh and temp 70-80F
Leaves. Curl up
Leaves. Color · Dark-brown
Plant. Wilting
7y ago
4
Solved
tangie
Dark purple areas on leaves — genes or environment/feeding problem?
What the heck is this? Is it just purple genes or a stress/deficiency or a combination of multiple factors? I have checked three visual cannabis plant health guides, and did not find a single issue which looks like this. Maybe a combination of 2 factors, but I'm not convinced 😐
Week 9
Leaves. Color · Dark-purple
Leaves. Color · Dark-brown
2y ago
6
6
Solved
Unpluggy
Deficiency?! Please help with weird Leaf signs :(
This Plant didnt have any problems in This whole run. Sinne 1-2 Weeks she started showing These weird signs and i cant figure out what it is. I thought it could maybe be phosphorus deficiency or something. Got a lot worse in the Last few days! :((
Leaves. Color · Dark-brown
Leaves. Other
2y ago
1
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
88kasanova
Browning in the center
Getting some browning on the middle part of the leaves.. can anyone identify this??
Week 4
Leaves. Color · Dark-brown
6y ago
2
1
Solved
zerobane
Aeroponics system; fan leaves start browning on edge in 2nd week of bloom.
Aeroponics system that my fan leaves start browning on edge in 2nd week of bloom every time (about 7 grows in journey). Is this normal? Should i be concerned and adjust nutes at all? Or just selective trim any of the more "crispy" ones? Photo is 2nd-3rd week into bloom.
Week 8
Leaves. Color · Dark-brown
6y ago
1
1