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Back to Grow Questions
What’s this disease and cause
Australianbuds
started grow question 3y ago
What is this disease on my plant or what is it and the cause?? Please help
Open
Leaves. Color · Black or grey
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Answer
Similar Grow Questions
Solved
Grnhead
In the 3rd photo in week 12 there is spotting on the leaves. Does anyone have an idea of what that is from? A deficiency? I had trouble getting the nutrients right and that showed up first after I flushed for a few days.
Week 12
Leaves. Color · Black or grey
7y ago
1
2
Solved
Mcnuffy
Leaf colour black
Week 5
Leaves. Color · Black or grey
3y ago
8
4
Solved
organigrower69
Discoloration
Two of my leaves have serious discoloration coming from the middle of the leaf
Leaves. Color · Black or grey
6y ago
2
Solved
ZhugeTsuki
What the actual heck is going on with these leaves
Leaves from all around the plant are showing these symptoms. Much more detailed info in grow diary but current runoff ec is 1.7 and problem is spreading quite badly.
Week 7
Leaves. Tips · Die
Leaves. Twisted
Leaves. Color · Black or grey
6y ago
1
3
Solved
Smokeyboar
If a plant has cal and mag and phosphorus def how do you correct these
If a plant has cal and mag and phosphorus def how do you correct these
Leaves. Color · Black or grey
6y ago
1
3
Solved
1juan420
greyish leaftips and dieing branches after topping
the highest branches died after topping. It looks to me like they had the same symptoms like some new upper branches are developing now. It looks very dark & feels soft Temps were 17-19°C & Humidity was 90%+ Water should be PH5.9, think ph reader might be wrong and ph is too low?
Leaves. Color · Black or grey
2y ago
1
1
Solved
stefu
Hello, do the leaves of the plants get darker if you give more nutrients before they show signs of over-fertilization? I use Canna aqua. I know that if I give too much nitrogen, the plants get darker. But is it the same with too high EC?
Leaves. Color · Black or grey
6y ago
1
2
Solved
Maskedcucumber
At what stage do leaves get darker ? This is confusing
I overwatered them at the beginning of veg and then I fed them with 0.7 ec nutes max, EC would go up if I gave more. I've had tips burning probably from light too close. I find that leaves are pretty dark but it may be because of the strains. When leaves do get darker in flo ?
Week 9
Leaves. Tips · Burnt
Leaves. Color · Black or grey
4y ago
3
4
Solved
Mitch
Nutrient burn
How can I fix a nutrient burn on a seedling?
Leaves. Color · Black or grey
6y ago
1
1
Solved
Chillymann
Black poison is starting to show her colors.What can i do to speed up or enhance this process.See photos.This is a outdoor grow .
Week 16
Leaves. Color · Black or grey
6y ago
1
Solved
Kushpooh
LEAFS DYING
The edges of the leaves are dry and black. Every single point of the leaf is burnt(black) or yellow...even some edges on the leafs of the coal are burnt. I guess it’s overfert...but I just flushed. Is it Ph? I haven’t checked in awhile. Is it they ready to be cut down?
Week 9
Leaves. Color · Black or grey
7y ago
1
2
Solved
m1kax
Leaves with Spots brown/yellow.
this is my 1st grow, they are autoflower and this is day 60. ec from last runoff was ok. ph was 5.95 maybe is too low, but im already give him high ph they start getting this stains week ago i change my light recently, and i got high humidity last week like 80%.
Leaves. Color · Black or grey
3y ago
1
1
Solved
ScottShelby
Weird spots!
HELP me out please , what the plant is trying to tell>>?, I'm using CFL lights, watering with 300ppm and 6 pH
Week 3
Leaves. Color · Black or grey
5y ago
2
2
Solved
igrowtomatoes
which deficiency?
what deficiency does this look like? (specifically the plant with the yellow tips,blackish leaves,and brown spots on lower leaves) ph is around 5.9 but also i know my meter is probably not accurate. i thought i was underfeeding if anything,did have root rot.
Week 4
Leaves. Color · Black or grey
6y ago
4
3
Solved
Cookie_monster12
What is this caused by? Spreading through mid leaves quite fast
Week 8
Leaves. Color · Black or grey
5y ago
4
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
7y ago
5
2
Solved
Jovkimm
Hey brothers and sisters ! This is my first grow so IM little out of this but still to get some good results with latte yield (Im hoping) So my setup is -4quick ones 2x190w led panels from dutch passion (so they should ne pretty high quality i hope ! I would apreciate All help
Week 6
Leaves. Color · Black or grey
8y ago
1
Solved
PolishFarmer
Coco grow problem
Hi Guys! I have issue in my grow. Girls are in 9th week from seed, 2nd week flowering. Coco substrat pH 5.8 EC 1.0-1.1 temp 23/24 humi 50%. Water EC 0.1 + calmag up to 0.2-0.3, Coco a/b up to above value 1.1-1.2/ph5,8. I believe that are deficiencies by too low ph for bloom stage
Leaves. Color · Black or grey
6y ago
1
2
Solved
Mekster
Week 2 flower.Buds turning black
Buds and leaves under are turning black, any advice? Something to worry about?
Week 6
Buds. Other
Leaves. Color · Black or grey
3y ago
3
2
Solved
Albgrow
Hello guys! A have a big problem
Hi there. Today while checking my lovely flowers i found this plant woth this kind of leaf. It has more than one leaf like this the same plant. Anyone has any idea
Leaves. Color · Black or grey
6y ago
2
2