Hibiscus with whitefly
A few months ago I posted a problem here which was diagnosed as white fly and I was given instructions for taking care of it. Since I live in Ontario I was not able to get the exact insecticide, but I did get an oil-based one which I have used repeatedly with no results. This infection has since travelled to my tomato seedlings, several of which I had to discard and I am now at the point of tossing the hibiscus (a beautiful double red). Before I do this and since summer is near my question is, will the white fly be taken care of when I move the plant outside? If yes, then I will wait awhile and put it out. Question 2: is the white fly something that came in with the plant last fall? I did repot with potting soil before bringing it in. I would rather lose this one, than have it infect my other house plants. Any help would be appreciated. Thank you.