Tetia from Altanta, Ga writes
We used the spray on azaleas and the peonies are close in proximity - they look a little brown.
First, you want to be sure if you are targeting an insect or a disease or both. Bonide All Seasons Horticultural Spray Oil is labeled for applications to azaleas and not peonies. The product is listed to treat overwintering eggs of insects such as mealybugs, aphids, leafminers and other listed insects. We suggest you confirm with the local cooperative extension Master Gardener the cause of the browning. We will be happy to help you select a product that will best fit your needs.
Answer last updated on: 08/29/2017