 Burgundy mixture is used as a preemptive fungicide prevention for trees and small fruits.This occurs because the Cu(II) ions are capable of interfering with enzymes found within the spores of many fungi, preventing germination from occurring.Unfortunately, the mechanism for copper antifungal properties is not well understood, though it is thought that interactions between the copper and negatively charged portions of the cellular membranes of the fungi promote an altered shape and increased membrane permeability, which alters the homeostasis of the cell and can lead to insufficient uptake and storage of essential nutrients and ions.