sulfur burning not killing powdery mildew. what can I do?

I was able to kinda stall it by burning but its still spreading. I burned it for 3-4 hours each day 5 days straight then stopped for 4 days. Is there a spray I can spray on my younger flowering ones before the buds come in?

H202 or potassium bicarbonate spray. Or a mix of both. 1% h202 solution with 1/2-1 tsp per litre should do it. Basically you are just trying to oxidate or change the ph of the leaf to inhibit growth. There are also some propolis based extracts for pm and many other fungal problem, i used one, didn’t had pm, just as a preventative, so i cannot comment on effectiveness. Also lowering your rh should help prevent future outbreaks.

sulfer burning wouldnt be my first choice to control pm, or last choice or any choice.
Get some pm wash or spray with silica, control humidity better.

use silica at the roots , get some calcium in the plant amino acid will help with calcium uptake, both will help prevent that.

Try burning an hour every day, no days off. I use copper fungicide spray for septoria effectively, have never used it for mildew but you might want to check it out, good luck

I beat it by with neem oil on young plants in flower and plants in veg, older flowering plants i chopped.

This stuff with one drop of dish detergent.

Bernie420 said:

sulfer burning wouldnt be my first choice to control pm, or last choice or any choice.
Get some pm wash or spray with silica, control humidity better.

use silica at the roots , get some calcium in the plant amino acid will help with calcium uptake, both will help prevent that.

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should the spray kill it quickly? it'll be on my younger ones that are still stretching, i'd rather not spray my full blooms. humidity stays 40-50. sometimes even goes down to 35 since it's winter

larrypizzimp93 said:

should the spray kill it quickly? it'll be on my younger ones that are still stretching, i'd rather not spray my full blooms. humidity stays 40-50. sometimes even goes down to 35 since it's winter

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Should kill it right away. It has to touch it though, if there small flip them upside down and dunk them. id rather spray some silica and water on my flower plants than have pm.

Clean the room real good also, doesnt have to be gutted and cleaned but clean it anyways.

PM spores are always in the air. You just dont want it taking hold on your plants.

larrypizzimp93 said:

I was able to kinda stall it by burning but its still spreading. I burned it for 3-4 hours each day 5 days straight then stopped for 4 days. Is there a spray I can spray on my younger flowering ones before the buds come in?

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I had pm for a couple years, I tried sulfer, green cure, green clean etc. I finally just had to chop everything down, buy new seeds, buy new equipment, clean, paint, and cleaned hoods, cords, bought new filters, it's the only way to get rid of pm. I also bought a dehumidifier to keep humidity down . Just saying