Trees and Shrubs : Pruning
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Canker on Prunus
I now think my Prunus serrulata 'Kiku-shidare-zakura has canker, as there is a gummy ooze on some branches. Do I cut them out now or wait until June?
Mary Catherine, Blackrock, Co Cork Posted: 31/03/2017
It may have gum disease, but there is nothing can be done about that. It makes little difference to pprune now or in June. June is slightly better.