I realized I have a powdery mildew problem on 3 of my hash plants in the ground. How do you recommend handling this problem? After I took these pics I sprayed them with a 40/60 milk/water mixture. I read this Can help kill the mildew and stop the spread
Powdery Mildew
- Thread starter Weedog420
- Start date
manfredo
Well-Known Member
There's sadly really no way to eliminate it once it sets it's ugly foot....you can use products to control it, but it will always come back. About the best you can do is nurse it to as finish and then wash it before using it.
And awesome product to prevent it in the future is Regalia. It's like $50 a quart but organic and super effective. It would even help now greatly. ..all depends if you want to spend money of not.
Bud man 43
Well-Known Member
Beautiful plants-
Growing outdoors is tough
They look a bit crowded- air flow will help
Growing outdoors is tough
They look a bit crowded- air flow will help
DMChiz
Well-Known Member
PM is a legit nightmare at this time of year. @Bud man 43 is right that getting a little airflow would do some good. Thin out the underbrush if you can. Or as I was once told, enough that you can ‘look up her skirt” (gasps) 
Cpappa27
Well-Known Member
I second this. You're plant just started stretch so youll have a couple weeks to get this under control before you cant spray with that fungicide. After that you can use a BioFungicide that you can use in flower, Arber makes one and they sell it at WalMart, it works the balls and it works for bud rot and other bacterial and fungal diseases. Dont forget the pump sprayer. Good luck PM is son of a bitch.
Treesomewanted77
Well-Known Member
Not sure if it will eliminate it but I’ve had great success with green cure. It’s potassium bicarbonate and safe to use right up to harvest. Im currently using zerotol spraying once a week to prevent since it’s been such a wet summer and they are just starting to flower. The zerotol is hydrogen peroxide and some other stuff that is supposed to kill all molds and mildews. But as mentioned it’s really hard to get rid of it once it starts. Humidity and the temp changes from day to night are huge for mildew breading. Wish ya the best of luck
green_machine_two9er
Well-Known Member
I like def guard and use early in season as often as possible. It can greatly reduce pm
Oldguyrealy
Well-Known Member
I was told to use Neem on my Squash. Sprayed them and they look much better.
I know not the same but.
I know not the same but.
StonedGardener
Well-Known Member
Get a very small bottle of " Banish " fungicide from Amazon or wherever( it's very concentrated , goes a long
ways , covers a lot of area). It's geranium oil . Developed in Netherlands . Can be used both for veg phases and flowering. I've I've reviewed all government and EPA
MSDS ( material safety data sheets. I've talked to chemist that work on site at sanctioned grow facilities. It's safe. No harmful products of combustion. It has never failed be. Two spray applications within a week and it disappears. It actually
kills PM where other products are meant for prevention. I never lost a plant. It's amazing.
leatherbackturtle420
Well-Known Member
Agree, micronized sulfur is my go to for everything almost.
StonedGardener
Well-Known Member
Sulfur is just a preventative. It has to be applied before PM shows up. Therefore, you must treat plant constantly. " Banish " actually kills PM. When it shows up, a couple of spray treatments within a week and it disappears. No shit. I love that fungicide.
Togs
Active Member
Modern Selections
Well-Known Member
Food grade citric acid, 1 teaspoon to 1 quart of water.
Then Growsafe as a preventative.
Then Growsafe as a preventative.
sh0wtime
Well-Known Member
why go with acid? couldn't he just spray with soapy water?
green_machine_two9er
Well-Known Member
Or just water….
Modern Selections
Well-Known Member
Citric acid seems to be quite effective killing PM. Plain water or soap isn't going to do anything.
sh0wtime
Well-Known Member
noted, thanks.
Dboybudz
Well-Known Member
Yea definitely air flow and milk or peroxide things like that just slow it down. In my experience once it sets in nurse it with fungicide before flowering. But if other guys had success with that expensive stuff I'd try it cause will get worse and bud rot happen last year on mine to.
Dboybudz
Well-Known Member
Definitely try to prune alot under and around cause no air flow gets behind em. That's exactly why mine got it just like yours did. Looking great though
