Is Powdery Mildew like Chicken Pox?

I still don't understand PM. It seems to pop up at the weirdest times like low humudity and consistant temps for me. The transition
in my experience between having it and beating it, is weird. It's like one day it's the terminator and battling. Then the next it's "over" and at that point the left over stuff on the leaves isn't even a worry it's like it's dead or it just can't spread anymore. The only difference being the temps are getting colder outside and it's raining more? lol makes no sense.

Chicken Pox you can (theoretically) only get once. PM you can get over and over. It's more like herpes.

Most important thing in battling PM is airflow. How's your airflow situation?

PJ Diaz said:

Chicken Pox you can (theoretically) only get once. PM you can get over and over. It's more like herpes.

Most important thing in battling PM is airflow. How's your airflow situation?

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I have had PM and wind burn on the same leaf lol

ubluntu said:

I have had PM and wind burn on the same leaf lol

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Yeah, but maybe that's because air isn't getting inside the canopy and PM is spreading from there. You didn't answer the question about how is your airflow situation.

PJ Diaz said:

Yeah, but maybe that's because air isn't getting inside the canopy and PM is spreading from there. You didn't answer the question about how is your airflow situation.

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Air flow is good. I should clearify the PM is beat. No significant change in enviroment. It's like a seasonal thing, it was bad everywhere, outside. Maybe it's just the spores in the air. They sense winter is coming and are waiting it out, even though humidity and temps are still about the same inside.

I just can't pinpoint an actual direct casue like temp swings, humidity like most people say. for me it can pop up and just as soon dissapear.

I would guess it's your environment. Airflow is really important like PJ said. And if it happens more when it's cold outside, that really makes me think it's your growing conditions. PM seems to like it cooler with some humidity. Only had it once, and figured out it was because I was trying to exhaust out a soffit vent in the cubbyhole I tried to veg in. The warm air combined with the cool air coming in the vents and created humid spots in the cubby. Like how condensation works. Changed the environment and it's all good. I bought a tent and don't use that cubbyhole anymore. PM is not as bad as I thought at first so don't panic. I saved my Green Crack from it when that happened, and I'm on round 4 and 5 of the GC clones now. I hope I can keep her going. I'm still a rookie and my plants are no where near perfect, but I think "trial and error" is the way I learn best.

GC round 4 about to switch to 12/12.


GC round 5 just cloned a few days ago.

If it's coming in from outside, you might consider an air intake filter if possible. Keep the spores from getting in your grow area will fight a lot of the battle.

Quest knows a lil bit. Hope it's of some help. Imma PM hater. Lol

Making the environment unsuitable to PM to grow is the key. Spores are always present. Maintain rh% <50% and don't let lights out temps drop below 70. Thats the secret.

Thanks for the replies! Just trying to do brainstorm a reverse diagnosis: "why did my powdery mildew go away". Theirs many accumulative reasons why i got it in the first place.
Enviroment has got to be why it's gone away. Even though on paper it should be getting worse. Theirs probably very few spores left in the air to actually germinate.
I can't disagree with air flow. If i only had one fan, it would be an under canopy for that reason.

Here's my opinion so take it for what it is. I've been growing a while and battled every type of pest, fungus, and disease. PM can be terrible.

Unless you kill it all, it will forever come back. You can try all the sprays and mixtures you want but you will never kill it 100% unless you burn sulfur.

One of my rooms had it and right when i think I had it beat, there you will see a little spot. A little spot means its still alive and in the air. A sulfur burn will kill everything in the air, on the leaf, and hiding in every nook and cranny in the room. Repeat the process a couple times a week during lights out and you will never ever see it again.

It stinks but no worse than growing pot. If you shut off all fans, burn sulfur for an hour or so, kick the exhaust on and it will pull it right out. After I did this I never saw PM again, I still do a sulfur burn to prevent a couple times a year.

kgp said:

Here's my opinion so take it for what it is. I've been growing a while and battled every type of pest, fungus, and disease. PM can be terrible.

Unless you kill it all, it will forever come back. You can try all the sprays and mixtures you want but you will never kill it 100% unless you burn sulfur.

One of my rooms had it and right when i think I had it beat, there you will see a little spot. A little spot means its still alive and in the air. A sulfur burn will kill everything in the air, on the leaf, and hiding in every nook and cranny in the room. Repeat the process a couple times a week during lights out and you will never ever see it again.

It stinks but no worse than growing pot. If you shut off all fans, burn sulfur for an hour or so, kick the exhaust on and it will pull it right out. After I did this I never saw PM again, I still do a sulfur burn to prevent a couple times a year.

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Kgp can I run my burner after I foiler sprayed with seaweed extract? It says to avoid burning if plants were sprayed with anything oil based.

Thanks

Powdery mildew is an obligate biotroph. It lives in a parasitic/symbiotic relationship in nature with plants.


Its reproduction and growth requires living plant tissue, it infects your plants and breeds in them and blooms/sporaliates and then infects other plants where spores land...its more translaminot then systemic but it does replicate within your plant before it blooms and spreads

The mechanism in which in its spores infect new plant tissue is pretty cool. Plant health or plant cell rigidity plays a big roll in transmission...as it can be avoided/prevented. Since preventing spores access is much harder...

rustyshaclkferd said:

Powdery mildew is an obligate biotroph. It lives in a parasitic/symbiotic relationship in nature with plants.


Its reproduction and growth requires living plant tissue, it infects your plants and breeds in them and blooms/sporaliates and then infects other plants where spores land...its more translaminot then systemic but it does replicate within your plant before it blooms and spreads

The mechanism in which in its spores infect new plant tissue is pretty cool. Plant health or plant cell rigidity plays a big roll in transmission...as it can be avoided/prevented. Since preventing spores access is much harder...

Click to expand...

I increased my amino acids, added some silica and I'm bang on with my ph and nutrition. I'm keeping my humidity in check and I have great airflow. My temps are stable with lights on and off.
I don't have any pm as we speak but I'm covering all my bases

Kp sunshine said:

I increased my amino acids, added some silica and I'm bang on with my ph and nutrition. I'm keeping my humidity in check and I have great airflow. My temps are stable with lights on and off.
I don't have any pm as we speak but I'm covering all my bases

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When you increase your aminos make sure to add more calcium, in a readily available form either bonded with nitrogen which will expediate its catalytic process with tour aminos or

Use a Calcium Glucoheptonate Chelate as a spray or boost feed(just this and water as a feed)

This will aid in natural resistances...

rustyshaclkferd said:

Powdery mildew is an obligate biotroph. It lives in a parasitic/symbiotic relationship in nature with plants.


Its reproduction and growth requires living plant tissue, it infects your plants and breeds in them and blooms/sporaliates and then infects other plants where spores land...its more translaminot then systemic but it does replicate within your plant before it blooms and spreads

The mechanism in which in its spores infect new plant tissue is pretty cool. Plant health or plant cell rigidity plays a big roll in transmission...as it can be avoided/prevented. Since preventing spores access is much harder...

Click to expand...

You ever use a burner? I haven't

rustyshaclkferd said:

When you increase your aminos make sure to add more calcium, in a readily available form either bonded with nitrogen which will expediate its catalytic process with tour aminos or

Use a Calcium Glucoheptonate Chelate as a spray or boost feed(just this and water as a feed)

This will aid in natural resistances...

Click to expand...

Hey Rusty I'm just using promix and GH nutes with Lucas formula and foiler spraying seaweed extract. I'm also adding the extract every fourth watering.

If you could give me some advice it would be appreciated

Kp sunshine said:

Hey Rusty I'm just using promix and GH nutes with Lucas formula and foiler spraying seaweed extract. I'm also adding the extract every fourth watering.

If you could give me some advice it would be appreciated

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Thats a great set up, very cost effective and will produce quality buds. Foilar with a seeweed heavy with auxins, like technaflora and feed with a eckolonia kelp for boosted root growth from cytokinins

I like a cycle of feeding with Full strength feed, then half then water/tea then back to the cycle...

What are your specific concerns with PM?

Kp sunshine said:

You ever use a burner? I haven't

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Yes, sulfur burners are great. Depending on the state of your PM issues and money, you can go a lot of different ways...