Geofite
New member
I have been battling powdery mildew for about a month now. At the end of august, there's lot of powdery mildew everywhere in my environment, weeds in my lawn, some of the shrubs, and just all over everywhere. So my weed was being affected too. I tried a few different things and they did knock it down. On sunday, I used my own home made concoction based of a number of organic ingredients used in different PM spays so I combined them and sprayed my plants. I check them daily and there are a few spots of PM so I just spot spray those or just remover the leaf. So far it seems to be working. I did defoliate most of the fan leaves and have been inspecting the buds as this makes it easier to deal with a big grow and the amount of time it takes to spray all that.Thank all for the responses i have decided to just monitor and leave them alone to try and get to full maturity before i crop anything. Geofite did you do anything in interim for the powdery mildew i heard that spraying with water, baking soda and a couple drops of baking soda will keep it at bay but i wonder if anyone has tried that, i too am thinking of doing the hydrogen peroxide wash at harvest it is hard to identify the bugs for sure every picture i see of aphids seems as though they can be seen just with your eyes where as the pictures are posted are really small i believe i am at almost X500 in those pictures.
This is the concoction I used this sunday. It has not done any harm to my plants. If you try it, you can do a spot test to see how it affects your plants. My plants are outside so I don't know how this would work on indoor plants. I got the ingredients from Amazon but these ingredients can be found at a home brew store, or wine making store and these things are added to wines and beer so they are safe. The lactic acid and citric acid and potassium bicarbonate are the only chemicals approved by Health canada to be used as cannabis fungicide. The milk is to make it stick. So far, the plants are doing great and the mildew is knocked down really well. Just mix the ingredients below and spray really well.
Georgia's spray mix:
8 cups water
1 cup milk
2 teaspoon potassium bicarbonate
1 teaspoon lactic acid
1 teaspoon citric acid
All these buds where sprayed on sunday with this concoction. There's a few spots with mildew but I could have missed those areas during the spray so I just do a touch up where I see the mold.
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