I just noticed that the dahlias with the light green foliage have white fly? It's a new one too me. I have never had anything except a wood chuck and bunnie. What should I use and how?
oh yes! a definite problem, these buggers will inject a hormone to make the plant grow the way they want it, that means dwarfism!
I had this problem and now at any sign of the winged white ones I will spray the underside of the leaves of the entire plant with malathion. I have done this twice so far this year, kills them right away. Don't know if this is a restricted chemical, now...... but I have some from years ago.
Thanks I hope I can find some.