The Grow Awards 2026 🏆 
HELP - Black dots on leaves
Glucostarted grow question 5y ago
HELP !!! I got black dots spreading on my plants ! Is it leaves stephoria? Phosphorus deficiency ?
Thanks for your help I'm panicking ahahh
Open
Leaves. Color - Black or grey
Feeding. Deficiences
likes
Answer
Similar Grow Questions
Solved
Tishamempmade2017
Help with my gorilla punchI have a 3 week old gorilla punch female and I have yet to add nutrients and she’s growing strong but I check the ph in the pot and it’s 7.5 !! I want to get the ph down without killing the plant. The soil I’m using is fox farm coco loco coconut coil. I’m looking for suggestionsPlant. Other
Feeding. Deficiences
5y ago
4
4
Solved
El_Bottanico
intervenal discoloration, organic growGave her enzimes last week, maybe they were too much or some nutrient lock out due to a somewhat excessive fertilization (too much vermicompost)
Think I will go on with plain water to the end I think maybe the problem will sort out itself or wont degenerate too much. Any advice?4y ago
1
2
Solved
John_Federic
Is this a magnesium deficiency?Why does my plant want to die?Leaves. Color - Mottling
Feeding. Deficiences
4y ago
1
5
Solved
Goenndalf
More rusty spotsSee 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.5y ago
1
1
Solved
CrackinBeans
Ph and ec fluctuationsMy ph has been skyrocketing. Does any one know if lack of nutrient can cause this issue? I notice my ec has dropped significantly, and my PH has been skyrocketing. Im siting at around 8.2-8.5 for ph run off and around .8 for ec😬😬😬Week 6
Feeding. Deficiences
5y ago
2
2
Solved
herbalistssword
Grey leavesNoticed some leaves getting a brown grey colour. Any idea what this is? Seems to only affect leaves on one branchWeek 19
Leaves. Color - Black or grey
5y ago
1
Solved
Mikewithgreenthumbs420
Problems leaves spotting help please flower week 4Nutes problem not sure what's going on? package coming in any day containing General hydroponics "trio" what should I feed it first out of the 3 nutes any advice would be much appreciated just been giving it water any calimagic pot for pot kit this plant is sick I think. thanksLeaves. Other
Feeding. Deficiences
5y ago
1
Solved
DieselKush
Deficiency?What kind of deficiency does this look like to you guys?Week 1
Feeding. Deficiences
5y ago
3
3
Solved
Hiphopopotamus33
Possible deficiency?What's going on with my girl? This has been a continuing problem throughout my grow and I'm stumped.Feeding. Deficiences
6y ago
3
Solved
Fruitgrower
Drainage issueI'm not quite sure why this cup doesn't absorb its waterings when the other two solo cups are getting Watered every day. All 3 cups have no drainage. They are all grown in the same conditions.
My first instinct is lack of drainage, do I need to make some holes, bottom or side?Week 5
Feeding. Deficiences
5y ago
3
6
Solved
JebusHeals
Rust spots on leaves, second grow and need some confirmation.I'm noticing rust spots on my leaves, which I suspect could be due to nutrient burn or lockout, given the PPM is unusually high for this stage of growth. To tackle this, I'm planning a simple flush with some Cal-Mag, keeping the pH at 6.5. Does this sound like the right approach?Week 6
Feeding. Deficiences
9mo ago
1
1
Solved
Aragon
Dark spot on the leaves of my seedlingHello, i have a weird dark spot on my seedlings idk what it is and if i should be worried. I know on these genetics the leaves can turn dark purple but I don't think it would be happening this early. I fed them nutes for the first time yesterday and today this dark spot appeared.Week 3
Leaves. Color - Black or grey
5y ago
2
2
Solved
Crowdkillmymeat
Small brown spots on leavesThis plant is now 6 weeks into flower in a 5gal dwc bucket and after changing the water yesterday these spots started showing up this afternoon but only on a handful of leaves. Am I looking at a deficiency and if so what would be a good remedy or additive?Leaves. Tips - Burnt
Feeding. Deficiences
5y ago
3
2
Solved
Mr_weed_pt
Nutrients deficientOne of my plants is showing some marks on the leavesWeek 7
Feeding. Deficiences
5y ago
7
4
Solved
BudXs
Please see the 2 photos marked in the diary. Is this a classic PK burn? Did a feed with no MegaCrop, no cal-mag, just PK boost at diluted dosage. The coppering and yellowing has come sudden. Leaves are crispy where burnt. I hear its easy to burn with PK boost. Did I do that?Week 13
Leaves. Color - Black or grey
6y ago
5
2
Solved
MarkWatney
Black spots?Is this a deficiency, nutrient burn, or disease, growing in MG soil, recovering from overwatering as well.Leaves. Color - Dark-brown
Leaves. Color - Black or grey
5y ago
1
1
Solved
Zuzuman
Mehrere Mängel2. Grow mit Gorilla Cookie Autoflower Samen. Hinten links sehen die Mängel aus wie hinten rechts, denke Phosphor also laut Bildern und vorne ist so ziemlich vieles gemischt aber extrem. Der einzige Bud der richt wenn man ihn anfasst ist der von der hinten rechts die anderen nichtBuds. Not fattening
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
6mo ago
2