How to prevent it from now on?

Paraitrait que la moutarde marche bien dilué en spray.

Hello. You could try this; Combine 6 to 8 drops of dish soap and 1 tbsp. of cayenne pepper with 1 gallon of water. Spray on the plants and under the leaves too. Apply once a week or after the rain when the plant is dry. Chuck.

one of those cheap mesh greenhouses? mesh net? pesticiedes? the typical stuff.. what are you willing to spray on something you will later smoke? LOL gets more complicated. things that are systemic will stick in the plant even after you aply. this sort of product shouldn't be used with something you smoke. You want it to break down in a week or two or faster. neem is fine in vege. not much you can do in flower unless you compromise on things that may or may not be smart health-wise. if youve bought weed on BM you have smoked all sorts of crazy shit, if that makes oyu feel better about it, lol.