The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Login
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
HELP - Black dots on leaves
Gluco
started 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
4ako4ako
some kind of deficiency?
👋👋👋 is this some kind of deficiency?
Leaves. Curl down
Leaves. Other
Feeding. Deficiences
1y ago
3
Solved
MiyamotoMusashi
Deficiency and overfeeding
hello growers, i have a problem with some of my plants. they suffer nitrogen deficiency and a slithy overfeeding. what am i suppost to cure? im doing 0,3ml biobloom, 0.3ml/l biogrow, 0.3 calmag, 0,3 fishomix, 1ml algamic, 700ml a day of tap water, ph 6,80. light 18-6 under a 600w
Leaves. Tips - Burnt
Leaves. Color - Yellow
Feeding. Deficiences
4y ago
6
Solved
RpX4630
Blocked plant
Hi. I have a problem, I think it's magnesium and calcium toxicity. I would appreciate any help. I have already washed the roots and I will see how it recovers. TKS
Feeding. Deficiences
5y ago
2
Solved
CreamOfTheCrop
Brown/Grey spots on the leaves
Hey, I hope this is my last question for this grow :P I've noticed some brown/grey spots on the yellowing leaves, what could they be, deficiencies or sunburn? I'm still feeding the plant with nutes, but the next watering will be a flush, so I didn't expect discoloring before that
Week 11
Leaves. Color - Yellow
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
5y ago
1
1
Solved
420throwaw4y
Is this sign of nutrient lockout? I have moved her to a bigger pot now, that said I’m worried I’ve been testing my PH wrong, I uploaded a pic (day 26) is she starving? Up til now I haven’t fed her anything but water
Week 5
Leaves. Color - Black or grey
6y ago
2
2
Solved
technoShaman
Are these droopy lower leaves a problem? Only with one plant
Hello Beautiful People! Two days ago I noticed in the morning that one of my Raphael plants had droopy lower leaves. I watered it with some herculean harvest and after night time it bounced back. Today it is droopy again. Is this a problem? How can I fix this? Thanks a ton !!!
Leaves. Dropping off
Plant. Other
Feeding. Deficiences
5y ago
4
Solved
Rollex420
Your opinion?
Today flushing the wedding cake i was thinking that the problem was an excess of nutrients, but instead water was quite clean, around 1100ppm at the first drain, after several flushes water is now on 600ppm. I also raised the lights.. I still do not understand 🤔
Leaves. Tips - Burnt
Leaves. Color - Yellow
Feeding. Deficiences
5y ago
4
2
Solved
TerrazasBrew
Deficiency
Could you spot the deficiency? Calmag? Light burn from droplets of water? 6weeksThis auto Critical FastBuds has been growing slow and now is showing stagnation signs, and her sister is now flowering and looks much better, but lower leaves looks the same on both.
Week 6
Feeding. Deficiences
4y ago
1
1
Solved
versace_grow
Underfed?
Underfed?? What can be the problem?
Week 2
Feeding. Deficiences
6y ago
3
3
Solved
Frosty905budz
Deficiency or lockout?
Looking for a second option if this is a lockout or a deficiency? Thx
Plant. Other
Feeding. Deficiences
6y ago
3
Solved
romeoromeo
HELP!
Hello everyone, can someone please tell what could be the cause of this? Are fungus gnats chewing on leaves or is it because they are feeding on roots? Or other pests/problem? Thank you!
Leaves. Other
Plant. Other
Feeding. Deficiences
4y ago
2
2
Solved
Murrod9106
Nutrients
Can anyone tell me if my ladies are lacking nitrogen
Leaves. Color - Yellow
Feeding. Deficiences
5y ago
2
2
Solved
RunWithIt
Popped up around last week (week 4, monday). Prior to week 4, i had been watering with tap water, which in my area is pretty hard.(7.8+ pH) Been correcting pH to 6.8 with each watering since. (2 waterings since then.) Should i just continue feeding 6.8 pH water or add cal-mag?
Week 5
Leaves. Color - Black or grey
7y ago
2
4
Solved
diabolito
Can anyone identify deficiency type in the leaf?
Can anyone identify the deficiency type in the lower fan leaf on this week 7 Jack herer?
Week 6
Feeding. Deficiences
4y ago
2
3
Solved
stefu
Hallo, werden die Blätter der Pflanzen dunkler wenn man mehr Dünger gibt bevor dass sie überdüngung Erscheinungen haben? Ich nutze Canna aqua. Ich weiß dass wenn ich zu viel Stickstoff gebe dass die Pflanzen dunkler werden. Ist das aber auch so bei zu hohen EC?
Leaves. Color - Black or grey
5y ago
1
2
Solved
timbarin
What deficiency do you think I'm dealing with? These are old fan leafs.
Week 13
Leaves. Color - Black or grey
5y ago
4
2
Solved
WulfBlud
Fade or deficiency? Day 62
Day 62, starting to see some slight discoloration in some of the older large fan leaves. I’m worried they are either burning or it is just a natural fade and I should let her ride I will be traveling on Monday for the week so wanted to make sure to do anything that needs doing
Week 8
Leaves. Color - Pale
Feeding. Deficiences
3y ago
4
Solved
Carbourie
Yellowing leaves and strange spots
Any idea what could be going wrong with these Northern lights Auto (RQS) plants in 2nd week flowering? The leaves are now yellowing and there's some strange spots appearing especially on one of the plants. Using Bio Bizz - All Mix soil / 1ML Grow and 1ML Bloom for 2 weeks.
Leaves. Color - Yellow
Feeding. Deficiences
4y ago
1
2
Solved
Ner0z
Black discolouration on leaves
Okay so the problems with the black spots continue only on one plant. I tried reducing nitrogen and increased calmag to 4ml/g. I defoliated the affected leaves and sprayed with baking soda mix. 3 days later they're appearing again. If I don't get this fixed soon im gonna lose her
Week 2
Leaves. Color - Black or grey
5y ago
2
3
Solved
MarianPazdzioch
Odżywka
Dałem teraz biobizz bio grow bo taki mam w domu 4 ml na 1 litr.Zobaczymy co z tego będzie.Jest coraz więcej żółtych liści.
Week 3
Feeding. Deficiences
3y ago
1
13