Is this mildew and what should i do?

Rikkertvld · Sep 14, 2020

This is my plant and i want to harvest it, but there is some white stuff between the buds. What should i do?

tomatoesarecooltoo · Sep 14, 2020

Looks more like mineral scale to me, but its a little hard to tell in the pictures.

Rikkertvld · Sep 14, 2020

tomatoesarecooltoo said:
Looks more like mineral scale to me, but its a little hard to tell in the pictures.

And what should i do?

tomatoesarecooltoo · Sep 14, 2020

Rikkertvld said:
And what should i do?

If its mineral scale I wouldn't do anything. If its powdery mildew I would throw it away, but thats just me.

Rikkertvld · Sep 14, 2020

It is powdery mildew...

tomatoesarecooltoo · Sep 14, 2020

Rikkertvld said:
It is powdery mildew...

If you are sure, then the options I know of to treat it are sulfur fungicide, copper fungicide, hydrogen peroxide, and garlic oil (more of a preventative). The hydrogen peroxide is the only one that won't leave any residue in your buds.

But its so far along its probably already deep in your buds. My vote is trash can. I'm sorry this happened.

Madbud · Sep 14, 2020

Can you retake the pic in daylight without a flash?
Edit: yeah i see it on the leaves, but the buds look like trichs.

Dirtbag · Sep 14, 2020

Rikkertvld said:
It is powdery mildew...

What makes you so sure? It really doesnt look like PM to me at all. I agree it looks like some sort of scale. Have you been spraying with anything? Using a humidifier?

I will say this bud looks suspicious but it's hard to tell what is going on, the pic is blurry. Need clearer pics. Could be some other form of grey mold, fusarium or botrytis. But the stuff on the leaves absolutely does not look like PM.

Rikkertvld · Sep 14, 2020

Only yesterday with a combination of milk and water. But nothing else.

Dirtbag · Sep 14, 2020

Rikkertvld said:
Only yesterday with a combination of milk and water. But nothing else.

Funny, I was going to say that looks like milk scale on the leaves.

Need some better clearer pics to diagnose.

Zakattack · Sep 14, 2020

I’ve had that exact same thing happen to my plants on one grow . Defos pm!! If it’s been growing indoors it’s due to the humidity being high . Anything above 55% and that’s when it starts from my experience. Not much you can do to save it if you’re planning to keep it indoors. But what I did was move my plants outside ,gave it a really good wash a few times, tried rubbing off where I could and the fresh air kinda let it become smokable. You should also invest in a dehumidifier. Almost as important as the growlight itself in my opinion

Rikkertvld · Sep 14, 2020

I will make better pictures tommorow!

Dirtbag · Sep 14, 2020

Yeah taking a better look at the pics I do see a couple spots that look like PM. Normally you see it all over the leaves before it starts infecting buds though. Weird...

You can see it really well here..

This stage in the game, I'd make hash out of it all. The PM spores are small enough to pass through the bubble bags. Just need to wash the trichs really well. That bud will not be smokeable like it is.

tomatoesarecooltoo · Sep 14, 2020

Rikkertvld said:
Only yesterday with a combination of milk and water. But nothing else.

OK that makes sense then, thats why it looked like scale on that first pic.

Kanzeon · Sep 14, 2020

Zakattack said:
I’ve had that exact same thing happen to my plants on one grow . Defos pm!! If it’s been growing indoors it’s due to the humidity being high . Anything above 55% and that’s when it starts from my experience. Not much you can do to save it if you’re planning to keep it indoors. But what I did was move my plants outside ,gave it a really good wash a few times, tried rubbing off where I could and the fresh air kinda let it become smokable. You should also invest in a dehumidifier. Almost as important as the growlight itself in my opinion

It's not from the humidity being too high, it's from it fluctuating too far out of VPD. There's a waxy layer on the outside of the leaf that serves as a defense mechanism for infections, but that layer is dependent on the ambient humidity of the entire grow. Keeping the leaves moving so that water doesn't have a chance to sit on the leaves or buds is also a factor.

PM is not necessarily caused by an excess of moisture, just conditions favorable for infection. Humidity being too low for proper VPD will give it a chance to set in, as will sudden temperature drops. PM hit me hardest when running only a dehumidifier.

If those were my buds, I'd cut that plant and make hash with it, and spray the rest of the room with micronized sulfur daily. Every bud that comes out of that room will need to be rinsed before smoking, but it can help any other plants limp along to the finish. Wipe down the walls of the room with bleach or iso and clean everything in it to try to minimize exposure to spores in the future.

Madbud · Sep 14, 2020

Dirtbag said:
What makes you so sure? It really doesnt look like PM to me at all. I agree it looks like some sort of scale. Have you been spraying with anything? Using a humidifier?

I will say this bud looks suspicious but it's hard to tell what is going on, the pic is blurry. Need clearer pics. Could be some other form of grey mold, fusarium or botrytis. But the stuff on the leaves absolutely does not look like PM.

I’m seeing this fan leaf, but now it sounds like milk is a possibilty

Kanzeon · Sep 14, 2020

I wanted to go into detail about how to tell what's PM on this bud. There may also be some botrytis on the top between the 9 and 12 o clock circles.

The five spots there are where the spores have colonized. Also I just noticed that I missed one in the middle but I'm not re-editing this precise, detailed scientific work. You can tell it's not milk scale because the leaves are thinner where they're affected.

But zoom out and what does it look like? That's where water droplets would be sitting. Every infected area is in a place where water would naturally pool on the plant. It was my exact experience with it as well. Now ventilation needs to be increased, but doing that just ensures that the spores get everywhere with infected plants in the room.

Dirtbag · Sep 14, 2020

Madbud said:
I’m seeing this fan leaf, but now it sounds like milk is a possibiltyView attachment 1030766

Yeah that is milk. But I agree with Kanzeon he has PM and possibly other fungal pathogens.

Rikkertvld · Sep 15, 2020

First of all i want to thank everybody for their reply. Here are more pictures. What dhluld i do? And i am dutch so my english is not that good, therefore can you tell me in easy words what i should do.
Furthermore, i do not know how to make hasj so if anybody could explain this i would be very thankfull.

Your browser is not able to display this video.

Rikkertvld · Sep 15, 2020

And by the way, i am growing outside and not in a room.

Is this mildew and what should i do?

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Is this mildew and what should i do?

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