Michael from Wyckoff writes
There are no restrictions on the Fertilome Triple Action product label stating it can't be mixed with the Bonide Liquid Copper fungicide. Typically you should do a small jar test of the two products first to make sure they are compatible in the tank before spraying, and many customers alternate their sprays between the Triple Action and Liquid Copper rather than applying them at the same time, but either is fine to do.
Answer last updated on: 04/18/2023
