Frankie from Yuba City, California writes
The application rate of any insecticide is going to depend on the insect you are targeting. With roses being sensitive to certain active ingredients and application methods, we highly recommend speaking with the manufacturer to determine the specific application rate of Merit Granules to treat your roses. You can reach Bayer at 800-331-2867.
Here are two options for alternative products that contain Imidacloprid (same active as Merit) Both are applied around the root zone and are used for basically the same treatments.
Bonide Systemic
Fertilome Tree and Shrub
Answer last updated on: 04/01/2020
