Gene from Houston, Tx writes
Have whitefly infestation on 25- 5ft Viburnums.
Merit 2F Insecticide should be applied as a systemic soil drench. You could spray Bifen IT at 1 fl oz per gallon monthly to foliage. Please take a few moments to review our treatment article that offers more helpful tips. White Fly Control Article
Answer last updated on: 05/22/2018