Black on leaves

[Copperhead66]

Does anyone have any information on what this is.
Thx

 

[BurnzYzBudZz]

Does anyone have any information on what this is.
Thx

Oh no. Not the purple disease. I see this commonly happening on outdoor grows which tells me it is spreading. I’ll find that thread one second.

Dark Purple Disease Affecting New Growth?

Has anyone seen this issue before? Temps have been hot: 28-31C Day / 15-22C Night with 75-85% humidity Avg. Appears to be affecting all plants in the garden except a freezeland/timewarp strain that had flowered itself and was in and out of veg/flower all summer. Other than that some 15 or 16...

www.thcfarmer.com

Good luck.

 

[Jimster]

If it was further into flowering I might suspect bud rot, but it does look like the dreaded "purple disease". It usually results in stunted and deformed growth but often clears up after a while. This has been becomming more widespread and is seen from cost to coast as well as overseas, I believe. Not sure what the pathogen is but it is most common in outdoor grows.

 

[Aqua Man]

Isn't this the exact same pic from a post a few days ago?

 

[BurnzYzBudZz]

Isn't this the exact same pic from a post a few days ago?

Different person, but yes same situation.

 

[Aqua Man]

Different person, but yes same situation.

The pic is not the exact same one? I could well be mistaken

 

[BurnzYzBudZz]

The pic is not the exact same one? I could well be mistaken

Different thread, same issue. It’s happening often outdoors.

What is turning these Purple?!?

Hello, I have new growth that is turning purple. Is this the beginning of grey mold? Doesn’t seem to be hurting the growth at all. Any info is appreciated

www.thcfarmer.com

 

[Olt]

Been looking for an answer to this, showed up in a few grows around here. I read the entire other thread. Is phytoplasma still the prevailing theory?

 

[BurnzYzBudZz]

It’s a tough one. There’s no doubt about that one.

 

[Olt]

My buddies have tried everything, completely changed soil and added new nutes. Indoors they're fine. I guess no one has had this tested by a plant pathologist yet? We're in the northeast, on our third year of this "purple".

 

[BurnzYzBudZz]

My buddies have tried everything, completely changed soil and added new nutes. Indoors they're fine. I guess no one has had this tested by a plant pathologist yet? We're in the northeast, on our third year of this "purple".

I think it’s circulating. I wonder if any California cash crops have been affected by this.

 

[Olt]

I think it’s circulating. I wonder if any California cash crops have been affected by this.

Good question, I think I've read it's in Hawaii, so I'd imagine it's there. When cash crops get affected, there will be tests done for sure. I'm not sure the results would be shared with the expense of the testing though.

 

[BurnzYzBudZz]

Good question, I think I've read it's in Hawaii, so I'd imagine it's there. When cash crops get affected, there will be tests done for sure. I'm not sure the results would be shared with the expense of the testing though.

Another farmer just stated in the larger part of the thread they stated it may be spread by the leaf hopers. Have you guys had any signs or seen those in your garden at all?

 

[Olt]

Another farmer just stated in the larger part of the thread they stated it may be spread by the leaf hopers. Have you guys had any signs or seen those in your garden at all?

Yes, I saw many leaf hoppers when I looked at them last year and have tried to convince my buddies that this must be the problem. This year they sprayed Sevin on surrounding brush to knock them down but I don't think it's helping. Several miles away, on another hillside, my other buddy is growing the same clones with no purple, but he has tons of leaf hoppers too.

 

[BurnzYzBudZz]

Yes, I saw many leaf hoppers when I looked at them last year and have tried to convince my buddies that this must be the problem. This year they sprayed Sevin on surrounding brush to knock them down but I don't think it's helping. Several miles away, on another hillside, my other buddy is growing the same clones with no purple, but he has tons of leaf hoppers too.

What’s crazy is that you have had it each of the last three years and he hasn’t had shit. That’s what blows my mind. Like why? You know?

 

[Copperhead66]

Has anyone tried using a fungicide on it? I was wondering if that might help

 

[Olt]

What’s crazy is that you have had it each of the last three years and he hasn’t had shit. That’s what blows my mind. Like why? You know?

Yes it is crazy. My best guess is that a certain tree species has a disease that spreads via leaf hoppers, thrips or aphids, only spreading to plants nearby. But the wide spread of cases and the fact we all have leaf hoppers up here but only some have purple has me stumped.

 

[Olt]

Has anyone tried using a fungicide on it? I was wondering if that might help

I'm not sure I've read that anybody has tried, and we haven't yet, not sure what the best product to try is.