Just noticed my Kilmarnock willow is suffering from rust! It appears to be mainly the lower branches, so i could give it a bit of a trim to remove the worst of it and burn the cuttings. But should I spray it with something (and with what??)- or is it to late - reading some Q&As it seems to be spraying should be done as a prevention better than cure, so any suggestions would be grateful.
It will survive though, rust won't kill it???
- 4 Jul, 2011