We took over a very overgrown garden last year - cleared out conifer but left fruit trees even though we were not sure whether they were still alive. Most have come into leaf, but I suspect they may have issues. One Plum on the land behind us is quite close to my new native hedge - one hedging whip has started to get very shrivelled leaves at the top of the whip and I want to nip this in the bud before it spreads.
Can anyone recommend a spray I can use on these old trees to control many of the common diseases - caused by the area being overgrown and overshadowed by 30' conifers for years.
Any other advice would be gratfully received.