Nh from California writes
The Bio Advanced All-In-One Rose and Flower Care does not have to be applied after the last frost, but you do want to make sure the soil is not frozen or water logged when doing the application.
Per the Product Label: • Begin using this product in the spring when plants are actively growing. • Reapply every 6 weeks for a total of 3 applications per year. In areas where disease occurs frequently and the soil is sandy, the application interval can be shortened to 4 - 5 weeks for a total of 4 applications per year.
Answer last updated on: 03/14/2021