How often can I apply? My mix is 1 T baking soda, 1 T horticultural oil, 1 T dish soap to one gallon of water. Thank you!
Certified GKH Gardening Expert
Application may depend on the plant and the fungus issue your are trying to control.
If I am using a fungicide in my own garden for a fungus issue, I may apply every 7 to 10 days.