I would think that before you spray anything you want to make sure you have just watered so that the plants wont take up much or anything.

As to the fungicide I am not sure. I have always heard Hydrogen Peroxide, but if its dirt I am at a loss.
GoldenGoblin Reviewed by GoldenGoblin on . baking soda as a fungicide need feedback having possible mold problem- i posted this yeaterday with a photo- did not recieve any suggestions so i researched this site another weed site and all over the internet- there was a lot of info on using potassium bicarbonate as a fungicide, a natural organic suggestion- as recommended i mixed 1 oz of baking soda with one drop of liquid soap with 1 gallon of water- i sprayed the infested plant and this mornig all the hairs have turned red as if they died- i have rinsed the plant heavily - i Rating: 5