Monthly Tip

To prevent peach leaf curl, use resistant peach and nectarine varieties where possible (the Pest Note linked below provides a list.) For non-resistant varieties, treat trees with a fungicide such as a fixed copper spray every year when the trees are dormant (typically December to January). When applying any fungicide, it is essential to cover the trees to the point of runoff or until they are dripping to obtain adequate disease control.

Generally, a single early treatment when the tree is dormant is effective, although in areas of high rainfall or during a particularly wet winter, it might be advisable to apply a second spray late in the dormant season, preferably as flower buds begin to swell but before green leaf tips are first visible.

More Information: Peach Leaf Curl Tips from UC