Will from Billings, Mt writes
Safari 20SG insecticide can be applied to treat a variety of soft and armored scale insects, such as European Elm scale, however this application is best done in spring after leaves have expanded. For the crawling stage, it is best to apply a foliar spray of an oil product or a pyrethroid such as Talstar P. This article has more details about the life cycle of this insect.
Answer last updated on: 08/06/2019
