Jim from Sacramento, Ca writes
Monterey Once A Year Insect Control II is not labeled for use on rose bushes/rose trees. It should be applied to fruit and nut trees: Apple, Loquat, Oriental Pear, Pecan, Crabapple, Mayhaw, Pear, Quince. We do have a product that is called Bayer Advanced All-In-One Rose and Flower Care that is feeds and protects against insects and diseases.
Answer last updated on: 03/07/2018