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By Divacat

United Kingdom Gb

Please can you tell me if apple scab/canker is infectious to other apple trees ie can it be caught by them



Yes, Scab is a fungus, the spores can travel from one tree to another. Also, if the conditions are right for that kind of infection, then other trees are also going to get it in any case.
Try spraying with Copper sulphate.
Canker can go from tree to tree too.

27 Jul, 2015

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