Hello my friend, outdoor is quite complicated as probably tons of white flyes are around there, try to remove the affected low leaves (if not more and more will born there) maybe try natural things as you are already in flowering right? Use maybe garlic in 1L. Of water and spray a bit under the leaves but with precaution and never at the end of the day to avoid mildew etc... Also i heard that if you plant basil close to them helps as white flyes dont like basil, but try to avoid quimical solutions as you are already in flowering stage, good luck ๐