By continuing to use the website or clicking Accept you consent to our cookies and personal data policy. For details please see Privacy Policy
Accept
Brown spots!
Finedakinestarted grow question 3 years ago
Not sure if it's calcium deficiency anymore. I feed her 5x the suggested dose of cal-mag a few days ago and the problem is a little worse I think. The brown spots are spreading but only on the top leaves near the buds. No lower or shaded leaves are affected.
like
Answer
Gokou4OGanswered grow question 3 years ago
I agree with oreganoman to me looks like maybe manganese but I wouldn’t be adding 5x the dose if they don’t need it . An over load like that can hurt the plant from the other nutrients she needs
like
Complain
Organomananswered grow question 3 years ago
You can not solve any problem, only create them, by giving 5x the dose recommended.
The problem occurred slowly, the cure must also occur slowly.
I don't think it is a cal/mag problem, but an iron deficiency, which is a trace element and is why only the top leaves are affected.
Give your plant a dose or two, at the recommended rate, of a soluble trace element mix, available at any garden centre, and I am sure this problem will go away quite quickly.
Hope this helps, Organoman.
2 likes
Complain
MrRockwoolanswered grow question 3 years ago
Feeding 5x anything to help your plants is the wrong solution. I suggest next feeding do a 30% runoff and test the ph&ppm of it. That is a good start to help you figure out the situation.
1 like
Complain
ChitownCannaChicaanswered grow question 3 years ago
The rust spots are PH. You are doing a beautiful job with that lady! Calmag is acidic (at least the brand I use). Give her a few straight water feeding and get the EC and runoff Ph—- that will give you an idea of where she needs to be food wise…. Good luck! ✌️🏻💚🌿💨
1 like
Complain
Hydro_Hiebsanswered grow question 3 years ago
Yes. PH issues can fool you into thinking it is deficient due to calcium being locked out if out of range. Your pH in your soil should be 5.8 - 7.
6.5 is ideal
1 like
Complain
Similar Grow Questions
Solved
einamio
Weed doctors to the rescueDay 44, fb auto, my happy girl developed those dark spots at the top... Is this a Calmag deficiency? Although I'm giving her calmag every feeding. I think there are also first burnt tips. I'm about to water her tonight, what should or should not give her? Thanks for your inputs🙏
4 months ago
3
5
Solved
Romobo16
Black spotsIt's the last clon from that strain that I have (There are no longer seeds for sale) after saving her (She was in terrible conditions) she was growing great this last 5 days until yesterdays that I saw this black spots.
PPM 670-PH 5.78-WaterT 68.7-AirT 71.6-PPFD 120-Humidity80%
Leaves. Curl up
Leaves. Color - Black or grey
3 months ago
2
Solved
Amboss
Deadly LeavesStart Week 9 … is this a Problem or normal?
Leaves. Color - Black or grey
3 months ago
1
Solved
einamio
I keep loosing leaves to some sort of nasty necrosis. It affects leaves at all levels, small and big randomly. I had to remove a lot of dying foliageAt first it looks like a asymmetrical spot of leaf starting to thin out to lighter color then tissue dries and turn black. I have high runoff EC3.3 and I blame Easy boost pellets because I only add rootjuice 1ml/L and sugar royal 0.5ml/L to my water. What is it and how I fix it?
3 months ago
5
5
Solved
canongun
Leaves are turning into dark green with a plastic-like textureI have 3 ladies in my tent. While the others looking healthy, one of them has a darker green tone with a texture like plastic and shiny. Everything is the same (fertilizer ratio, coco medium), however the one on the picture has a problem. What might be the problem folks? 😩
Leaves. Curl down
Leaves. Color - Black or grey
5 months ago
3
2
Solved
Frnikola
What to do? → BF Runtz Auto - Day 42 - RH70, 80F in BioBizz Light SoilOn my last post, I was advised I have N tox, so I watered w/o BioGrow, just BioBloom and it's gotten much worse. The runoff EC was 1.5 (watered with 0.8, runoff pH was okay), so I’m guessing it's salt buildup. I plan to flush when this watering dries out—any thoughts?
Buds. Not fattening
Leaves. Color - Yellow
Leaves. Color - Black or grey
4 months ago
1
Solved
Dippp
Problem with plants in the 3rd week of vegetation.I'm posting again because I accidentally marked it as resolved.
I was using BioBizz CalMag from the beginning, but when I switched to Advanced Nutrients, I stopped because Ph Perfect Sensi Coco Grow A and B already contain CalMag.
Leaves. Curl up
Leaves. Curl down
Leaves. Color - Black or grey
4 months ago
1
2
Solved
Dippp
Problem with plants in the 3rd week of vegetation.Hello everyone, I am new grower, in the 3rd week, I started having issues with the leaves. Does anyone have a diagnosis for this?
I am using I am using Advanced Nutrients (Coco Grow A and B, B-52, Voodoo Juice)
Coco Soil
Temp: ~26 C
Rh: 60-65%
Feminized seeds
Thanks :D
Leaves. Tips - Burnt
Leaves. Curl down
Leaves. Color - Black or grey
4 months ago
1
Solved
casperdog
Floweringhello
Farmers!
Is this normal?
What is the reason and what is the solution?
Tnx
Leaves. Color - Black or grey
2 months ago
2
3
Solved
Cookiemonster297
Black dots - second opinion neededIm growing an Gorilla-Cookies Auto,
Indoor, 50w led, DWC with Plagron A+B and Power buds (Power roots at veg) water gets renewed once a week and my Ladie ist now 8 1/2 weeks old and Starts to develop black dots in the leave's Center.
Looks Like a Problem with Magnesium to me,
Leaves. Color - Black or grey
2 months ago
2
3
Solved
Nachtjasmin
Schwarze Spitzen und Flecken nach Neemöl-/Kaliseifenbehandlung in der Dunkelphase. Schimmel? Dran lassen oder abschneiden? Bitte um Hilfe!03. November: Zu Beginn der Dunkelphase, einen Mix aus 200ml Wasser mit 2ml Neemöl, ein Schuss Rapsöl und 4ml Kaliseife, auf die Pflanze aufgetragen. Grund dafür ist ein Befall mit weißer Fliege. Alles habe ich nicht aufgetragen. Heute sehe ich schwarze Flecken. Ist das Schimmel?
2 months ago
1
7
Solved
Lunxoz
Gray spots, mold ?Hello i spotted these gray spots on my plant, i had one leaf that was half covered with it so i decided to cut it :( Is that a bad sign or something ? I posted 2 photos of the whole plant if u see another issue. The burnt leaves on top is bc i had to leave the light on (vacation)
Leaves. Tips - Burnt
Leaves. Color - Black or grey
a month ago
1
1
Solved
kenpachi42
ist das sclimmKennt sich wer damit aus und kann mir sagen ob das schlimm ist? das ist mein erster grow und nur diese pflanze hat auf ein paar blättern diese punkte
danke schonmal im vorraus
Leaves. Color - Black or grey
9 months ago
5
4
Solved
Australianbuds
Leaves turning funnyHello can anybody please tell me what this is and the cause plese for the leaves to be discoloured and dying ogf
Leaves. Color - Black or grey
10 months ago
1
1
Solved
longearringboy420
Black spots on leavesBlack spots present on some fan leaves. During ~3rd month right now. Watering with HESI in Coco Coir, PH ~6 every time, 1/2 runoff water.
For about 2 weeks prior to this, I also added very small amount of kelp powder.
Soil seems fine.
Leaves. Color - Black or grey
7 months ago
2
Solved
MarcoCasanova00
Pest infestation left my plant folded and weak. I treated it, but now blacked out leaves?Ants were farming an oval shaped bug's secretions that was eating my stem and going underground, leaving a trail of a film-like substance.
Treated it with neem oil, cigarette butt tea, garlic and dishwasher soap to fend them off. Black leaves now. Tips?
7 months ago
2
3
Solved
PakaloloTingz
Grey spots on leaves and yellowingThe leaves are looking light green to yelloe and there are these dark edges on the leaves are showing up.. Has anyone experienced this before? It was happening a bit before transplant but now it seems to be getting worse. I just transplanted within 24hrs... Stress? Overwatering?
Week 8
Leaves. Color - Black or grey
4 years ago
1
1