Keith from Little Rock, Ar writes
This product does not mention Japanese Maple on it’s label. Per the Southern AG Liquid Copper Fungicide label: Due to the large number of species and varieties of ornamentals and nursery plants, it is impossible to test every one for sensitivity to Liquid Copper Fungicide. Neither the manufacturer nor seller recommends use upon species not listed on the label nor has it been determined that Liquid Copper Fungicide can be safely used on ornamental or nursery plants not listed on this label.
Answer last updated on: 09/25/2019