Powdery mildew

  • Thread starter Wristle
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Wristle

Wristle

62
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Just noticed this the other day and I'm kind of surprised how quickly it's spread. Good dozen leaves I can see this on.

Curious if a foliar spray of mixed water and hydrogen peroxide would be a good way forward? I don't really want to go out and buy anything if I don't have to.

Also, should I maybe just cut the more effected leaves off? Maybe thin the plant out a bit as well? Have read leave that are touching can cause issues.

It's been pretty humid here this week so I'm assuming that's it. Still surprised, fare bit of wind too.

Powdery mildew
Powdery mildew 2
 
Beachwalker

Beachwalker

7,055
313
You have both Mite damage and wpm; asap I would mix one level tablespoon of baking soda to 1 gallon of water and spray top and bottom of the leaves to stop the wpm

Then I would get liquid copper fungicide to properly treat the wpm

And I would also do a search for two products to control the mites, good luck!
✌😎
 
Wristle

Wristle

62
18
Beachwalker said:
You have both Mite damage and wpm; asap I would mix one level tablespoon of baking soda to 1 gallon of water and spray top and bottom of the leaves to stop the wpm

Then I would get liquid copper fungicide to properly treat the wpm

And I would also do a search for two products to control the mites, good luck!
✌😎
Click to expand...
Yea the spidermites issue has been dealt with for the most part. Those are old leaves.

Thanks for the help
 
Aqua Man

Aqua Man

26,480
638
I'm really curious as to why something like Bacillus amyloliquefaciens is not used to treat PM. It has the ability to not only kill stuff like pythium and PM imo but also tissue infected with it.

I would think applied as a foliar on an ongoing basis would have great results and no harmful side effects. Something like Southern AG fungicide. It's a bacteria that kills many fungi responsible for infections.
 
MerryJane22

MerryJane22

89
33
Aqua Man said:
This stuff.

GARDEN FRIENDLY FUNGICIDE – Southern Agricultural Insecticides, Inc.

southernag.com southernag.com
Click to expand...
Hey there Aquaman (I appreciate all your watering posts BTW---huge kudos)......I'm right now in the very early stages of my 3rd outdoor Michigan grow. The first two I got hit w/ WPM in the fall. This year a ton is visible in back grasses already. And last year I'd purchased this stuff (garden friendly fungicide). I sprayed neem as a deterrent last week now this week I'm considering alternating with this.....and continuing thru veg. I have several organic products on hand.....you think this makes sense? thanks!
 
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