Ok so this morning i decided to pull all my tomatoes plants due to an out break of blight. Now my over thinking self started to ask myself can weed get blight. I mean it an fungus that can spread to other crops it has air borne spores …have any of the outdoor growers ever experience or know if its possible 
There isn’t any research that indicates that cannabis is susceptible to blight. It doesn’t mean that weed isn’t susceptible or not. I would worry a bit… Peroxide is proven to treat blight.
Peroxide sprays are also used to treat other types of mold/fungus too. Mold is common in high humidity environments.
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Here inthe northeast it been heavy rains…and yes i cant find anything on blight with weed