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