I have an apple tree with fire blight. I've removed the infected leaves and
branches but have been unable to find any spray to prevent further
infection. I've seen copper sulphate mentioned but the guy at the garden
centre says it's been taken off the market. Also streptomycin sulphate
though can't find that anywhere.

Does anyone know if there is any commercial product that can be used to
treat fire blight on apple tress?

Thanks


Will