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Back to Grow Questions
HELP - Black dots on leaves
Gluco
started grow question 4y 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
Sun_Sweeds145
I'm thinking that there is a problem with yellow leaves.
I felt that the newly sprouted leaves just began to turn green and yellow. Is it a nutrient deficiency or ph? Cause , I only feed her with water and nutrient-dense water.😓
Week 1
Leaves. Color - Yellow
Feeding. Deficiences
3y ago
2
2
Solved
TheChronicHunter
What deficiency is this?
Anyone know what deficiency I’m experiencing here? Zn or Mn maybe?
Week 10
Feeding. Deficiences
4y ago
2
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
15d ago
1
1
Solved
Jhort
Is this lockout or some sort of deficiency? Soilless medium- using biothrive, biogrow, and cal-mag. Autoflower Lemond auto Prior to yellowing the plant looked very droopy for 2 wks. Roots look great
Leaves. Curl down
Leaves. Color - Yellow
Feeding. Deficiences
5y ago
1
2
Solved
tangie
Yellow & brown spots in 2nd and 3rd week in coco-perlite nursery cup. What am I doing wrong? Fed until 20% runoff (extra), strained. Smth with roots?
2nd grow in 70/30 coco-perlite mix* & very similar issues w. yellow/brown spots in weeks 2-3, then stabilizes. *CalMag & pH buffered 6h @ 0.5mS, pH5.8, strained** & seed planted. Feed: W1: **Strained sol. + water 70/30, pH5.8 W2: AN M+G+B 1-1-1 + Simplex CalMag Plus 0.4mS Help
Week 2
Leaves. Edges burnt
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
5mo ago
9
6
Solved
MrGreen92
Is this definitely CalMag deficiency? Check diary for video.
Before I go to over the top with the CalMag in a stupid attempt to nurse my plants back to health I just want to know for certain what it is. The leaves are clawing, bronze spots everywhere but the smallest of the 3 doesn't seem to be suffering as much.. what is it?!
Week 8
Feeding. Deficiences
5y ago
2
7
Solved
ColonelForbin1990
Brown spots on leaves! To Flush or not to Flush? That is the Question.
Hello, Seeing lots of brown spots developing around middle tier leaves. Reddit is telling me I should flush with 15 gallons of water to get rid of salts around the roots. That seems extreme but if that’s the cure I’d like to know more and can I use my tap water (7.1pH 133ppm)?
Week 5
Leaves. Color - Dark-purple
Feeding. Deficiences
3y ago
4
4
Solved
Naturalist
To feed or not to feed?
I burned these early but have been giving them straight 6.4-5 pH water for about the last 14 days should I continue with this or start gentle feed?
Week 4
Feeding. Deficiences
5y ago
2
3
Solved
Flauros
Help please with feeding advice.
Hello. Input: Calmag 120ppm, Pk 150ppm, A+B 160ppm, megafol 51ppm, melassa 5ml, Total input 739ppm, 5.97ph. Output: first drainage 1000-1100ppm. Last drainage output: 5.7ph, orange 960ppm, Cbd 817ppm, Zkittlez 1000ppm. Dont understand, what happened with my girls after 3days late
Week 7
Feeding. Deficiences
4y ago
2
1
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
2y ago
3
4
Solved
KevinC
Slow growth? What should I do?
Slow growth? What should I do? Day 47 from seed Start of week 4 veg (I started veg from when it developed 7 blade fan leaf - est 2 weeks from seed) Last watering 1 litre of water (6.2 ph, ghe micro,gro and bloom at 50% strength 2 days ago)
Plant. Too short
Feeding. Schedule
Feeding. Deficiences
5y ago
2
4
Solved
blackrain
Advice on next feed.
So just before I water tonight I want to ask what some more experienced growers would do instead. I'm getting near the finish and honestly just want to make it there without losing too much bud production. I think my next water tonight will just be 1ml of bloom/l, inputs?
Week 10
Feeding. Deficiences
5y ago
3
3
Solved
Misanthrope
Leaf Discolouration in Flowering
5 weeks into flowering, grown outdoor in potted soil with regular nutrients. I've been spraying with Epsom salt sol'n once/twice per week for 3 weeks to treat what I thought was Mg def. Yellowing is starting now on upper leaves. Suggestions on what other steps to take?
Leaves. Color - Yellow
Feeding. Deficiences
4y ago
2
2
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
5y ago
1
2
Solved
Salokin
Cal-Mag deficiency?
My LSD-25 is showing a nutrient deficiency. The nutrient solution is at 900-950 ppm and ph is always between 6.0-6.3. I am already adding cal mag agent from canna as per vendors instructions to my reverse osmosis water and have added a bit more yesterday.
Week 4
Leaves. Other
Feeding. Deficiences
3y ago
4
7
Solved
arctic
Hi all! :( I am using RO water 030ppm. 200ppm(0.4ec) canna calmag agent 400ppm canna aqua. HPS 600w. 25с, 40-50%H, ph 5.7-5.8 total ppm ~ 550-650. I d
Hi all! :( I am using RO water 030ppm. + 200ppm(0.4ec) canna calmag agent + 400ppm canna aqua. HPS 600w. 25с, 40-50%H, ph 5.7-5.8 total ppm ~ 550-650. I don't understand what's going on: (all young plants get older and similar problems begin. it cal mag deficiency?
Leaves. Color - Yellow
Feeding. Deficiences
5y ago
5
9
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. Deficiences
5y ago
1
1
Solved
SlamFM
Which Deficiency(ies)?
After looking at some pictures and reverse image searching some of the attached pictures. I think it maybe both phosphorus and potassium deficiency.
Week 10
Leaves. Color - Yellow
Setup. Strain - Autoflowering
Feeding. Deficiences
1y ago
6
2
Solved
Splifranger
Monster bud mix nutes ( lack of nitrogen)
Does any got some experience with monster bud mix by zammi with photoperiod strains? I like the nutes but i think they dont last long enough to feed photoperiods am lakking nitrogen in flower stage with autos no problem now the grow is staggerd a bit. And liquids i need to mes ph
Feeding. Deficiences
4y ago
2
4
Solved
SparkyGrow
Deficiency?
Hi all, noticed some brown spots on leaves, from google images I’m assuming cal/mag deficiency. Anyone able to confirm or advise on what it is before their next feed? Cheers
Week 5
Feeding. Deficiences
4y ago
1
1