Rust Fungi..!! First Time Having it. Need Some Help. Pics Included!!

[WashougalWonder]

What a bummer. I do not understand the sulfur burner? Why not just use the propane type heater and raise the temps up? I just don't understand, but I sure feel for ya. I have always related what those pictures look like to cold stunting, but I will believe you as far as it being that rust fungus. I did not know neem will smother fungus, but isn't that also going to clog the stomata?

[Treez81]

I'm pretty much a beginner, but my plants looked almost the same with rusty spots on them, and it turned out being a mag def. Your leaves are curling in also it looks.

[MMRCGrower]

What a bummer. I do not understand the sulfur burner? Why not just use the propane type heater and raise the temps up? I just don't understand, but I sure feel for ya. I have always related what those pictures look like to cold stunting, but I will believe you as far as it being that rust fungus. I did not know neem will smother fungus, but isn't that also going to clog the stomata?

Well the temperature is starting to raise here in So Cal. So between that and the extra light we put up, that fixed the low temps. So if low temps were the problem, the plants should start to correct themselves now. The only thing is we have the exact same strains outside and there not doing this. And there exposed to even colder temps and rain. You would think that they would do the same thing.

As for the Neem, I've read that it works by suffocating the fungus. The thin layer of oil that Neem leaves, is supposed to do that. I could be wrong on exactly how it works, but thats what I've read and what the Hydro store guys say. And I dont think Neem Clogs stomata's. If you spray a plant with Neem, they usually dont look to happy about it at first, then by the next day, there standing tall with nice glossy leaves.

So how can it suffocate fungus, but still let the leaves breath..??? I have no idea. Maybe as the Stomata's release moisture into the air, they break breathing holes through the thin layer of Neem that allow them to continue to breath. Maybe.

[MMRCGrower]

I'm pretty much a beginner, but my plants looked almost the same with rusty spots on them, and it turned out being a mag def. Your leaves are curling in also it looks.

See.... Im with you on this one, but I've been using the same exact Nutrient mixture for over a year now. The only thing I changed was that I added Dutch Master's Zone, to get rid of unwanted bacteria in the growing medium. But I've also added it to my hydro system thats in a different location and that plants are doing great.

So in all, I'm left to believe that its something airborne. It could be the temperature, but thats the only other possibility. But even with that, the temps weren't that far off to begin with.

Also keep in mind that these plants have been vegging for about 3 months now and have been transferred between 3 different locations. We cant flip the lights to flower or even bring anymore plants into the grow area until we have this issue under control. Sucks.

[WashougalWonder]

Well, doesn't matter exactly what it is, you have identified positively the problem exists in the grow room.

If plants staying outside get colder....including the roots.....as in they are in pots above ground, then it positively is something airborne. In that case I would empty the grow room and fumigate and spray fungicide big time all over.

Conversely, if the roots outdoors are in the ground and have ground temp to keep the feet warm, then it could be the cold issue, and I have never seen a plant really recover from it if in flower.

So....You are there, just which one is it? Just how cold did that room get? Below 50 degrees? That is the magic number...in S,Cal it got that cold?

[MMRCGrower]

Well, doesn't matter exactly what it is, you have identified positively the problem exists in the grow room.

If plants staying outside get colder....including the roots.....as in they are in pots above ground, then it positively is something airborne. In that case I would empty the grow room and fumigate and spray fungicide big time all over.

Conversely, if the roots outdoors are in the ground and have ground temp to keep the feet warm, then it could be the cold issue, and I have never seen a plant really recover from it if in flower.

So....You are there, just which one is it? Just how cold did that room get? Below 50 degrees? That is the magic number...in S,Cal it got that cold?

The outdoor plants are in pots, above ground.

The temps may have dropped below 50. We had one week that just passed not too long ago where it was beyond cold. I love the cold weather, and usually cruise around with shorts and flip flops on, when everyone else is all bundled up.... but this week, even I couldnt take. It was very cold. So I wouldnt doubt that it dropped below 50 for 2-3 days.

We'd hate to toss out all of our plants and start over, but we may have to. We see that the worst plants are still trying to form new growth at the tops, so we're hoping that we roll out our little plan, that they'll all recover.

We're still in Veg. We have some 3-4 foot tall plants, that are still in Veg. We cant flip the lights to flowering until this has been fixed and we get some good new growth.

The plan as of right now is to install heaters to bring the room up to a constant 85 degrees. Then treat the plants with a Potassium Bicarbonate Fungicide, until we are confident that all of the Neem Oil has been rinsed off the leaves. Then We're going to bring in a Sulfur Burner, and let that burn for 2 nights in a row. Then start spraying the plants down with a 3-in-1 spray that has sulfur in it. We're also going to crank up the CO2 a little.

So we'll see what happens.

[BUSHMANNINJA]

sulfer burn is fine with neem oil not same day but you dont need to wait weeks just tell it dries you should still spray off the neem 12 hours later with plain ph ed water the sulferburn changes the ph of the plant skin so fungi dont like to grow safer soap is also a good alternative also 10ml 35% hydrogen peroxide to 1gal water will do the job lite spray:thumbsup:

[MadSativa]

nute deficiancy caseued buy improper PH or improper nute usage. a flush and light nutes is needed. signs are heavey greening with heavey dead material on it. means its not a pest fungus is usualy somewhat differant but could be the same as well. fungus will turn black usualy

[WashougalWonder]

I would keep root temps under 80 if I could.

[MMRCGrower]

sulfer burn is fine with neem oil not same day but you dont need to wait weeks just tell it dries you should still spray off the neem 12 hours later with plain ph ed water the sulferburn changes the ph of the plant skin so fungi dont like to grow safer soap is also a good alternative also 10ml 35% hydrogen peroxide to 1gal water will do the job lite spray:thumbsup:

Thanks a lot man. I hope your right. We're gonna get that sulfur burner in there in a day or two. So we'll see what happens.

I just bought the Safer 3-in-1 spray. A buddy of mine told me its pretty good.