Rust spots on leaves
- Thread starter lcb212
- Start date
hotrodharley
Well-Known Member
You're watering at 6.5? Or that's runoff? I say pH is too high.
Beachwalker
Well-Known Member
By any chance in the natural light does it look like this?
If it does it's called septoria, aka. Brown leaf spot
If it does it's called septoria, aka. Brown leaf spot
Beachwalker
Well-Known Member
Kinda close to that. But these start as a real small spot then eats through and has that rust spot. It’s hitting a lot of leaves. I did water with Epsom salt when I first started flowering. 1tsp for a gallon. I never checked the runoff ever. I never thought of that. But this happens on all my plants
Beachwalker
Well-Known Member
You've just described Septoria, refer to the top picture, the little tiny spot on the otherwise perfect leaf
I have a thread in grow journals called Remo chemo where I go into a little bit of detail about how to deal with septoria on the last page and if you have anymore questions ask, good luck with it but it needs to be dealt with asap because it spreads fast, if that's what it is, and you and I both think it looks like it ?
I have a thread in grow journals called Remo chemo where I go into a little bit of detail about how to deal with septoria on the last page and if you have anymore questions ask, good luck with it but it needs to be dealt with asap because it spreads fast, if that's what it is, and you and I both think it looks like it ?
Beachwalker
Well-Known Member
.. can't promise you can cure it but you can find some information on how to treat it in the thread I mentioned above
To cure it if I'd had the electricity available I'd add a much larger dehumidifier, but I don't so I manage it as best as I can, for instance that Remo Chemo plant in the picture was the first to show it and was heavily affected so I chopped it, but it's already affected two other strains that were not affected last season by it at all so no weak plants stay in the grow! that's one example of managing it, good luck!
To cure it if I'd had the electricity available I'd add a much larger dehumidifier, but I don't so I manage it as best as I can, for instance that Remo Chemo plant in the picture was the first to show it and was heavily affected so I chopped it, but it's already affected two other strains that were not affected last season by it at all so no weak plants stay in the grow! that's one example of managing it, good luck!
Last edited:
Tbh i think your right man.
Doesn't really look like calcium lockout at all.
Thanks Beachwalker.
New disease to me.
I'll keep watching your thread too.
This Septoria is a really interesting disease.
propertyoftheUS
Well-Known Member
Add some air circulation, i mean as many FAEs , fresh air exchanges, as possible. As long as your "outside" air RH is below 55-60%. Of course the lower the better any mold or fungi. Lower the pH of your leaf surface might work too. Or a milk or carbonate based spray.
thumper60
Well-Known Member
get on it fast
![photo[473].JPG](/data/attachments/3254/3254348-e5f8e4bc2d848b2232385c664f25d42b.jpg)
Beachwalker
Well-Known Member
Dude are you going to spray it on your bud!?I'd use it in veg, but I wouldn't spray it on bud?
I've got it stopped already via baking soda/neem sprays and sulfur burns, but any leaf already infected is going to die
the prevailing thought is to remove affected leaves at the first sign, but when I get it stopped I leave them to help get the plant further along and to get new leaves growing which have no necrosis
I'm not recommending this, I'm just saying that's what I do and it seems to give best results in my situation. The exception is if I see a healthy plant with only one or two necrotic spots I will remove those leaves immediately
I've got it stopped already via baking soda/neem sprays and sulfur burns, but any leaf already infected is going to die
the prevailing thought is to remove affected leaves at the first sign, but when I get it stopped I leave them to help get the plant further along and to get new leaves growing which have no necrosis
I'm not recommending this, I'm just saying that's what I do and it seems to give best results in my situation. The exception is if I see a healthy plant with only one or two necrotic spots I will remove those leaves immediately
Last edited:
hotrodharley
Well-Known Member
Let the medium dry more between feedings/watering. Another unwanted side effect from too much water.
thumper60
Well-Known Member
how far into flower r u the copper does not get into plant an it washs right off,neem ,baking soda does nothing!! sulfur works just like copper except u don't have to burn that nasty stuff take ya pic spray copper or burn sulfur,also must say once a plant is infected with black spot it can not be cured only saved don't take cuts so save what ya got, an fix whatever is causing it
Last edited:
Beachwalker
Well-Known Member
Great info, thanks!
I'm going to do both! LOL this shit's nasty I'm going to hit it as hard as possible! Gonna add 30-50pt/day dehumidifier soon cuz I'm sick of it
The burner works and there's no spraying or mess, but I read the label on the copper spray and I'm not going to use it more than I have to, but I'm comfortable with what I've heard here and read online as far as using it so I just ordered it, thanks again
Attachments
Last edited: