Bordeaux Mixture Fungicide
Vitax Bordeaux Mixture
An organic, preventative fungicide, Bordeaux Mixture is most commonly used to control powdery mildew and it is also effective for potato blight, celery leaf spot, peach leaf curl, black currant & gooseberry rust, & apple / pear scab. It can also be used to prevent bacterial canker on plums and cherries
It works by stopping fungal spores from germinating, so if your plants are already suffering from a fungal disease, a non-organic, systemic fungicide is usually necessary.
Bordeaux Mixture contains sulphur, so it is not suitable for fruit trees that are listed as being "sulphur shy".